No problem, we've got 1791 and 3131 to multiply
1791 × 3131 = 3131 × (1791)
+ 3131 × 1 yielding 3131
+ 3131 × 90 that equals 281790
+ 3131 × 700 giving us 2191700
+ 3131 × 1000 producing 3131000

= 5607621
