No problem, we've got 3982 and 3129 to multiply
3982 × 3129 = 3129 × (3982)
+ 3129 × 2 which equals 6258
+ 3129 × 80 which equals 250320
+ 3129 × 900 resulting in 2816100
+ 3129 × 3000 that equals 9387000

= 12459678
