A box with 16 basketballs of the same weight weighs 17.88 kilograms (kg). Consider that the empty box weighs 0.6 kilograms (kg), find out how much 7 basketballs weigh in kilograms (kg).
17.88 0.6 [OP_SUB] 16 [OP_DIV] 7 [OP_MUL]
var_a = 17.88
var_b = 0.6
var_c = var_a - var_b
var_d = 16
var_e = var_c / var_d
var_f = 7
var_g = var_e * var_f
print('{:.2f}'.format(round(var_g+1e-10,2)))