No problem, we've got 1843 and 7790 to multiply
1843 × 7790 = 7790 × (1843)
+ 7790 × 3 that results in 23370
+ 7790 × 40 that is equal 311600
+ 7790 × 800 that is equal 6232000
+ 7790 × 1000 which equals 7790000

= 14356970
