No problem, we've got 8455 and 2398 to multiply
8455 × 2398 = 2398 × (8455)
+ 2398 × 5 which equals 11990
+ 2398 × 50 that equals 119900
+ 2398 × 400 that results in 959200
+ 2398 × 8000 that equals 19184000

= 20275090
