Each side of the cube has a number from 1 to 6 written on it. The sum of the numbers written on the two parallel sides of this cube is 7. Find the value of the number written on the parallel side to the side with 5 on it being multiplied by 5.
5 7 5 [OP_SUB] [OP_MUL]
var_a = 5
var_b = 7
var_c = 5
var_d = var_b - var_c
var_e = var_a * var_d
print(int(var_e))