No problem, we've got 9978 and 8470 to multiply
9978 × 8470 = 8470 × (9978)
+ 8470 × 8 yielding 67760
+ 8470 × 70 giving us 592900
+ 8470 × 900 that results in 7623000
+ 8470 × 9000 what gives us 76230000

= 84513660
