128 + 750 / 25 X 18
= 128 + 30 X 18
= 128 + 540
= 648
0.45 / 0.45 / ( 1 - 0.98 + 0.02 )
= 1 / ( 0.02 + 0.02 )
= 1 / 0.04
= 100 / 4
= 25