No problem, we've got 2847 and 1359 to multiply
2847 × 1359 = 1359 × (2847)
+ 1359 × 7 that is equal 9513
+ 1359 × 40 what gives us 54360
+ 1359 × 800 which equals 1087200
+ 1359 × 2000 that equals 2718000

= 3869073
