4.56 × 3.6 /0.12

Answer 1

Multiply numerator and denominator by 100.

4.56 • 3.6 • 100 / 0.12 • 100 =

4.56 • 360 / 12 =

4.56 • 30 • 12 / 12 =

4.56 • 30 = 136.8

Answer 2

Multiply numerator and denominator by 1000
=456×36/120
=456×3/10
=1368/10
=136.8