Simple operation of 3.5 * 0.8 + 5.5 * 80% + 4 / 5

Simple operation of 3.5 * 0.8 + 5.5 * 80% + 4 / 5

4/5×3.5+5.5×8O%+0.8
=0.8×3.5+5.5×0.8+0.8
=0.8×(3.5+5.5+1)
=0.8×10
=8