No problem, we've got 2373 and 8603 to multiply
2373 × 8603 = 8603 × (2373)
+ 8603 × 3 giving us 25809
+ 8603 × 70 giving us 602210
+ 8603 × 300 giving us 2580900
+ 8603 × 2000 what gives us 17206000

= 20414919
