A 1000 milliliter (ml) bottle was full of milk, but the bottle cracked and milk leaked at a rate of 5 ml (ml) per minute. After a few minutes, if you look at the milk bottle and there are 300 milliliters (ml) of milk left, find how many minutes have passed.
1000 300 [OP_SUB] 5 [OP_DIV]
var_a = 1000
var_b = 300
var_c = var_a - var_b
var_d = 5
var_e = var_c / var_d
print(int(var_e))