def calculateIGV(amount: float):
    return amount * 0.18


amounts, igv_list = [98, 46.50, 88, 70.40], []

for i in amounts:
    igv_list.append(calculateIGV(i))
print(igv_list)


igv_list = list(map(calculateIGV, amounts))
print(igv_list)