No problem, we've got 1377 and 2173 to multiply
1377 × 2173 = 2173 × (1377)
+ 2173 × 7 what gives us 15211
+ 2173 × 70 that is equal 152110
+ 2173 × 300 that results in 651900
+ 2173 × 1000 which equals 2173000

= 2992221
