No problem, we've got 7647 and 8620 to multiply
7647 × 8620 = 8620 × (7647)
+ 8620 × 7 giving us 60340
+ 8620 × 40 that equals 344800
+ 8620 × 600 that results in 5172000
+ 8620 × 7000 which equals 60340000

= 65917140
