No problem, we've got 5367 and 8403 to multiply
5367 × 8403 = 8403 × (5367)
+ 8403 × 7 which equals 58821
+ 8403 × 60 that equals 504180
+ 8403 × 300 which equals 2520900
+ 8403 × 5000 what gives us 42015000

= 45098901
