No problem, we've got 9781 and 7770 to multiply
9781 × 7770 = 7770 × (9781)
+ 7770 × 1 resulting in 7770
+ 7770 × 80 giving us 621600
+ 7770 × 700 giving us 5439000
+ 7770 × 9000 that results in 69930000

= 75998370
