Alright, let's work through 3531 times 5910 step by step
3531 × 5910 = 5910 × (3531)
+ 5910 × 1 resulting in 5910
+ 5910 × 30 giving us 177300
+ 5910 × 500 that results in 2955000
+ 5910 × 3000 which equals 17730000

= 20868210
