Sehee needs 15 liters of milk to make bread with friends. If Sehee currently has only 7 liters (L) and 200 milliliters (mL) of milk at home, how many 600 milliliters (mL) of milk should she buy at least?
15 1000 [OP_MUL] 7 1000 [OP_MUL] 200 [OP_ADD] [OP_SUB] 600 [OP_DIV] 1 [OP_CEIL]
var_a = 15
var_b = 1000
var_c = var_a * var_b
var_d = 7
var_e = 1000
var_f = var_d * var_e
var_g = 200
var_h = var_f + var_g
var_i = var_c - var_h
var_j = 600
var_k = var_i / var_j
var_l = 1
var_m=int(((var_k+9*10**(var_l-2))//(10**(var_l-1)))*10**(var_l-1))

print(int(var_m))