No problem, we've got 1616 and 8100 to multiply
1616 × 8100 = 8100 × (1616)
+ 8100 × 6 which equals 48600
+ 8100 × 10 giving us 81000
+ 8100 × 600 that results in 4860000
+ 8100 × 1000 that equals 8100000

= 13089600
