No problem, we've got 1658 and 2181 to multiply
1658 × 2181 = 2181 × (1658)
+ 2181 × 8 which equals 17448
+ 2181 × 50 what gives us 109050
+ 2181 × 600 which equals 1308600
+ 2181 × 1000 that is equal 2181000

= 3616098
