You need 400 won to buy 0.1 kilogram (kg) of carrots. Calculate how many kilograms (kg) of carrots you can buy with 2,000 won, including the decimal point.
2000 400 [OP_DIV] 0.1 [OP_MUL]
var_a = 2000
var_b = 400
var_c = var_a / var_b
var_d = 0.1
var_e = var_c * var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))