No problem, we've got 4991 and 1263 to multiply
4991 × 1263 = 1263 × (4991)
+ 1263 × 1 resulting in 1263
+ 1263 × 90 yielding 113670
+ 1263 × 900 giving us 1136700
+ 1263 × 4000 that results in 5052000

= 6303633
