Lowest multiplier for decimals

[axeblade346]

I have a spreadsheet with singular prices that have decimals and I am looking for a way to determan the Lowest multiplier to turn them into non decimal numbers

Lets take an example from the spreadsheet.
I sell a cobblestone for 20 coins and coal for 50 coins in the game this is for.
But 8 stone is made from "smelting" 8 cobblestone with coal and this my selling price for 1 stone will be 26.25. But the game has no 1/4 coins this I need to sell
4 Stone in a bundle for 105 coins. But what happens if Cobblestone price change how many stone must there in the bundle now?

Any ideas will be appreciated.

Thanks.

 

[axeblade346]

I have played around with Nested if but I keep on getting the error of to many nested formulas with

IF(E9=TRUNC(E9),1,IF(E9*2=TRUNC(E9*2),2,IF(E9*3=TRUNC(E9*3),3,IF(E9*4=TRUNC(E9*4),4,IF(E9*5=TRUNC(E9*5),5,IF(E9*6=TRUNC(E9*6),6,IF(E9*7=TRUNC(E9*7),7,IF(E9*8=TRUNC(E9*8),8,More than 8))))))))

If 1 go over 8