No problem, we've got 9429 and 8840 to multiply
9429 × 8840 = 8840 × (9429)
+ 8840 × 9 which equals 79560
+ 8840 × 20 producing 176800
+ 8840 × 400 what gives us 3536000
+ 8840 × 9000 resulting in 79560000

= 83352360
