Finding out how many mana bulls you need per hour as leecher

WARNING: THIS IS GOING TO USE LOTS OF MATHS AND NOT FOR TL; DR USERS

Summary:
As a new leecher, i always curious how many mana bull it takes for me every hour so i decided to do some research, hopefully it will help other leechers (those who curious about it) too.

Something to Note:
- This section is applicable for mana bulls (heals 60% of MaxMP) only, or you can alter cuz you using others.
- This does not talk about magic required for 1 hit, etc
- Arch Mages can be differ from this calculation because they use a 3rd job passive skill called "Element Amplification" causing the MP cost 2x times more if the skill is maxed, so alter the answer for "Step 4".
- I do not include damage you will be taking via Magic Guard cuz it's pretty variable and hard to create additional calculations for it.
- This is much more applicable for low level leeches (Red Slime, GS2/Slimy) only where you don't need to use magic guard vary the calculation (for Bishops only (where they could use heal skill)).
- "Casting every seconds" should be a average number (around)
(Example: You cast every 3 seconds on first area, moving to another area takes 5 seconds and cast every 6 seconds on second area then number should be 5)
- I'm not sure how much MP does Bliz and Meteor cost cuz i'm using BBB Hidden Street as reference, let me know how much do they exactly cost below, LOL!

Steps:
1) Prepare calculator, piece of paper and a pen (or notepad & calculator on computer)
2) Write down how many MP you have (character) whatever with Hyper Body or not.
3) Find the 50% of your MP
(Assuming you use 60% potion only once you reach 40% to use the potion efficiently, but maybe use once 50% to be more accurate for this calculation, Example: 16000 * 50% = answer 8000)
4) Now find out how many times the skill cast you need to reach 50% of your MP
(Example: Gen1 (2100 MP cost per cast) will use 4 times (from full MP, 8400 MP cost total) to reach "Step 4 Answer" (of course you use the potion once you reach it))
5) Multiply "Step 4 Answer" by <interval in seconds between casting>
(Example: 4 * 5 = answer 20)
6) Divide 60 by "Step 5 Answer"
(Example: 60 / 20 = answer 3)
7) Multiply "Step 6 Answer" by 60
(Example: 3 * 60 = answer 180)
8) Congratulations! Now you found out how many MP potions you need to use per hour as leecher!

More Examples:
Bishop: Gen30, 28000 MP, casting every 5 seconds

Spoiler

- Gen30 costs 3500 MP per cast
- Casting every 5 seconds
1) 50% of MP is 14000 MP
2) Takes 4 times of Gen30 (14000 MP total) to reach 50% of MP
3) Multiply 4 by 5
4) Divide 60 by 20
5) Multiply 3 by 60
6) 180 Mana Bulls needed for an leeching hour

Arch Mage (I/L): Bliz20, 25000 MP, casting every 4 seconds (same as (F/P) with Meteor20)

Spoiler

- Elemental Amplification Skill Level: 20 (Maxed, uses 200% of MP)
- Bliz20 costs 6800 MP (3400 * 200%) per cast
- Casting every 4 seconds
1) 50% of MP is 12500 MP
2) Takes 2 times of Bliz20 (13600 MP total) to reach 50% of MP) (yeah, pretty expensive, MP wash should be considered for this)
3) Multiply 2 by 4
4) Divide 60 by 8 (if decimal .5 or more, count as 1 (7.5 = 8))
5) Multiply 8 by 60
6) 480 Mana Bulls needed for an leeching hour

Bishop: Gen1, 10000 MP, casting every 6 seconds (A.K.A new leecher)

Spoiler

- Gen1 costs 2100 MP per cast
- Casting every 6 seconds
1) 50% of MP is 5000 MP
2) Takes 3 times of Gen10 (6300 MP total) to reach 50% of MP)
3) Multiply 3 by 6
4) Divide 60 by 18
5) Multiply 3 by 60
6) 180 Mana Bulls needed for an leeching hour

If you're still clueless about calculating and desperate for it, leave your details below but you gotta wait patiently for me to answer.

Code:

Character's Class:
Character's MP:
Ultimate Skill Level:
Casting every seconds?:
Elemental Amplification Skill Level (Applicable for Arch Mages only):

Example:

Code:

Character's Class: Bishop
Character's MP: 16000
Ultimate Skill Level: 1
Casting every seconds?: 5
Elemental Amplification Skill Level (Applicable for Arch Mages only):