No problem, we've got 1251 and 6163 to multiply
1251 × 6163 = 6163 × (1251)
+ 6163 × 1 that results in 6163
+ 6163 × 50 that results in 308150
+ 6163 × 200 which equals 1232600
+ 6163 × 1000 which equals 6163000

= 7709913
