No problem, we've got 7871 and 3810 to multiply
7871 × 3810 = 3810 × (7871)
+ 3810 × 1 giving us 3810
+ 3810 × 70 which equals 266700
+ 3810 × 800 that is equal 3048000
+ 3810 × 7000 that equals 26670000

= 29988510
