Alright, let's work through 9781 times 6840 step by step
9781 × 6840 = 6840 × (9781)
+ 6840 × 1 resulting in 6840
+ 6840 × 80 yielding 547200
+ 6840 × 700 yielding 4788000
+ 6840 × 9000 yielding 61560000

= 66902040
