No problem, we've got 3163 and 7809 to multiply
3163 × 7809 = 7809 × (3163)
+ 7809 × 3 resulting in 23427
+ 7809 × 60 that is equal 468540
+ 7809 × 100 what gives us 780900
+ 7809 × 3000 that equals 23427000

= 24699867
