No problem, we've got 1317 and 3144 to multiply
1317 × 3144 = 3144 × (1317)
+ 3144 × 7 what gives us 22008
+ 3144 × 10 that is equal 31440
+ 3144 × 300 that results in 943200
+ 3144 × 1000 that equals 3144000

= 4140648
