No problem, we've got 1153 and 6780 to multiply
1153 × 6780 = 6780 × (1153)
+ 6780 × 3 producing 20340
+ 6780 × 50 giving us 339000
+ 6780 × 100 giving us 678000
+ 6780 × 1000 giving us 6780000

= 7817340
