No problem, we've got 1631 and 6215 to multiply
1631 × 6215 = 6215 × (1631)
+ 6215 × 1 that is equal 6215
+ 6215 × 30 that is equal 186450
+ 6215 × 600 yielding 3729000
+ 6215 × 1000 resulting in 6215000

= 10136665
