No problem, we've got 5103 and 1337 to multiply
5103 × 1337 = 1337 × (5103)
+ 1337 × 3 what gives us 4011
+ 1337 × 00 that equals 0
+ 1337 × 100 what gives us 133700
+ 1337 × 5000 resulting in 6685000

= 6822711
