No problem, we've got 3881 and 1823 to multiply
3881 × 1823 = 1823 × (3881)
+ 1823 × 1 which equals 1823
+ 1823 × 80 what gives us 145840
+ 1823 × 800 which equals 1458400
+ 1823 × 3000 resulting in 5469000

= 7075063
