No problem, we've got 6440 and 3174 to multiply
6440 × 3174 = 3174 × (6440)
+ 3174 × 0 giving us 0
+ 3174 × 40 that is equal 126960
+ 3174 × 400 giving us 1269600
+ 3174 × 6000 which equals 19044000

= 20440560
