4^{8} x 16^{3} / 128 sederhanakan operasi bilangan berpangkat

2^{2}×{8}×2^{4}×{3} ÷ 2^{7}
= 2^{16}×2^{12} ÷ 2^{7}
= 2^{16+12} ÷ 2^{7}
= 2^{28} ÷ 2^{7}
= 2^{28-7}
= 2^{21}