1560
The divisors of 1563 are: 1, 3, 521and 1563.
1563/1
100
That is 4800
4198 to the nearest 100 = 4200
100
100
100
853 rounded to the nearest 100: 900. 10853 rounded to the nearest 100: 10900.
2500 is already at the nearest 100.
599 to the nearest 100 is 600.