No problem, we've got 7894 and 3879 to multiply
7894 × 3879 = 3879 × (7894)
+ 3879 × 4 producing 15516
+ 3879 × 90 what gives us 349110
+ 3879 × 800 that is equal 3103200
+ 3879 × 7000 that is equal 27153000

= 30620826
