Let's calculate 2631 x 5155
2631 × 5155 = 5155 × (2631)
+ 5155 × 1 resulting in 5155
+ 5155 × 30 giving us 154650
+ 5155 × 600 that results in 3093000
+ 5155 × 2000 that is equal 10310000

= 13562805
