A is 680. A is greater than B by 157. B is greater than C by 185. Find what number C is.
680 157 [OP_SUB] 185 [OP_SUB]
var_a = 680
var_b = 157
var_c = var_a - var_b
var_d = 185
var_e = var_c - var_d
print(int(var_e))