No problem, we've got 1780 and 4144 to multiply
1780 × 4144 = 4144 × (1780)
+ 4144 × 0 producing 0
+ 4144 × 80 that equals 331520
+ 4144 × 700 resulting in 2900800
+ 4144 × 1000 what gives us 4144000

= 7376320
