No problem, we've got 1387 and 5841 to multiply
1387 × 5841 = 5841 × (1387)
+ 5841 × 7 that equals 40887
+ 5841 × 80 that results in 467280
+ 5841 × 300 what gives us 1752300
+ 5841 × 1000 producing 5841000

= 8101467
