No problem, we've got 7871 and 9645 to multiply
7871 × 9645 = 9645 × (7871)
+ 9645 × 1 yielding 9645
+ 9645 × 70 what gives us 675150
+ 9645 × 800 that is equal 7716000
+ 9645 × 7000 that results in 67515000

= 75915795
