No problem, we've got 8638 and 3671 to multiply
8638 × 3671 = 3671 × (8638)
+ 3671 × 8 that equals 29368
+ 3671 × 30 which equals 110130
+ 3671 × 600 which equals 2202600
+ 3671 × 8000 that is equal 29368000

= 31710098
