No problem, we've got 5923 and 8420 to multiply
5923 × 8420 = 8420 × (5923)
+ 8420 × 3 that is equal 25260
+ 8420 × 20 giving us 168400
+ 8420 × 900 producing 7578000
+ 8420 × 5000 that is equal 42100000

= 49871660
