No problem, we've got 9173 and 9020 to multiply
9173 × 9020 = 9020 × (9173)
+ 9020 × 3 which equals 27060
+ 9020 × 70 which equals 631400
+ 9020 × 100 what gives us 902000
+ 9020 × 9000 that is equal 81180000

= 82740460
