Alright, let's work through 9935 times 3100 step by step
9935 × 3100 = 3100 × (9935)
+ 3100 × 5 yielding 15500
+ 3100 × 30 which equals 93000
+ 3100 × 900 giving us 2790000
+ 3100 × 9000 yielding 27900000

= 30798500
