No problem, we've got 7970 and 7851 to multiply
7970 × 7851 = 7851 × (7970)
+ 7851 × 0 that equals 0
+ 7851 × 70 giving us 549570
+ 7851 × 900 what gives us 7065900
+ 7851 × 7000 yielding 54957000

= 62572470
