29.99 x (1 - 40/100) = 17.994.
If the value refers to a unit of currency, don't forget to include the appropriate currency unit and round to two decimal places.
50 percent of 2999 = 2999/2 or 1499.550% of 2999= 50% * 2999= 50%/100% * 2999= 14995/10= 2999/2 or 1499.5
532 - 40% = 319.2
40 - (20%) = 32
540.00 - (40%) = 324.00
7,575 - (40%) = 4,545
(5%) - 40 = -39.95
128 - 40% = 76.8
48.00 - (40%) = 28.80
170 - (40%) = 102
85 - (40%) = 51
87.
82.20