640
3200 meters.
20% = 0.20 4000-0.20 = 3999.80
20% of 640 = 640*20/100 = 128
2.5% of 3,200= 2.5% * 3200= 0.025 * 3200= 80
1 percent of 3200 is 32.
20 off of 3200 is 3180. 20% off of 3200 is 2560.
5% of 3200 = 5% * 3200 = 0.05 * 3200 = 160
33% of 3200= 33% * 3200= 0.33 * 3200= 1,056
32 into a percent = 3200%32 * 100% = 3200%
5% of 3200 = 3200*5/100 = 160
18% of 3,200= 18% * 3200= 0.18 * 3200= 576