No problem, we've got 7659 and 1143 to multiply
7659 × 1143 = 1143 × (7659)
+ 1143 × 9 what gives us 10287
+ 1143 × 50 that is equal 57150
+ 1143 × 600 that equals 685800
+ 1143 × 7000 what gives us 8001000

= 8754237
