No problem, we've got 1729 and 3600 to multiply
1729 × 3600 = 3600 × (1729)
+ 3600 × 9 which equals 32400
+ 3600 × 20 what gives us 72000
+ 3600 × 700 which equals 2520000
+ 3600 × 1000 that is equal 3600000

= 6224400
