OK, you do not understand this yet. Not a big deal. But you need to try. Do you understand that B, h and p are just numbers? And that h and p are being multiplied? So you try to figure this out by writing down some multiplication problems that YOU know the answer to and solve for the 2nd number.
14=7*2, then 2=14/7. 15=5*3 and 3=15/5. 36=9*4 and 4=36/9.
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