No problem, we've got 2289 and 8920 to multiply
2289 × 8920 = 8920 × (2289)
+ 8920 × 9 what gives us 80280
+ 8920 × 80 that equals 713600
+ 8920 × 200 that results in 1784000
+ 8920 × 2000 yielding 17840000

= 20417880
