No problem, we've got 1137 and 8478 to multiply
1137 × 8478 = 8478 × (1137)
+ 8478 × 7 that is equal 59346
+ 8478 × 30 yielding 254340
+ 8478 × 100 which equals 847800
+ 8478 × 1000 what gives us 8478000

= 9639486
