No problem, we've got 7755 and 9780 to multiply
7755 × 9780 = 9780 × (7755)
+ 9780 × 5 giving us 48900
+ 9780 × 50 that results in 489000
+ 9780 × 700 giving us 6846000
+ 9780 × 7000 producing 68460000

= 75843900
