It is 89999.
The integer is: 90,000-1 = 89,999
90000 x 90000 = 8100000000
1000
80% of 90000 = 90000*80/100 = 72000
25% of 90,000= 25% * 90000= 0.25 * 90000= 22,500
It's 81,000,000
99000
90000 of them.
3500/90000 * 1000 = 3.88889 %
90000 x 34562143 = 3110592870000
There are: 90000/100 = 900
90000 of them.