No problem, we've got 3210 and 7978 to multiply
3210 × 7978 = 7978 × (3210)
+ 7978 × 0 what gives us 0
+ 7978 × 10 that is equal 79780
+ 7978 × 200 producing 1595600
+ 7978 × 3000 producing 23934000

= 25609380
