Yoojung gave 5 notebooks she had at first to her older sister, and then gave half of the remaining ones to her younger sister. She counted the number of notebooks left at the end, and it was 4. How many notebooks did Yoojung have at first?
4 2 [OP_MUL] 5 [OP_ADD]
var_a = 4
var_b = 2
var_c = var_a * var_b
var_d = 5
var_e = var_c + var_d
print(int(var_e))