Is 4 / 5 times 99 plus 4 / 5 using the law of multiplicative distribution

Is 4 / 5 times 99 plus 4 / 5 using the law of multiplicative distribution

It's the law of multiplicative distribution
4/5×99+4/5
=4/5×99+4/5×1
=4/5×(99+1)
=0.8×100
=80