Alright, let's work through 2435 times 7791 step by step
2435 × 7791 = 7791 × (2435)
+ 7791 × 5 giving us 38955
+ 7791 × 30 yielding 233730
+ 7791 × 400 what gives us 3116400
+ 7791 × 2000 that results in 15582000

= 18971085
