No problem, we've got 3604 and 7940 to multiply
3604 × 7940 = 7940 × (3604)
+ 7940 × 4 resulting in 31760
+ 7940 × 00 giving us 0
+ 7940 × 600 what gives us 4764000
+ 7940 × 3000 that results in 23820000

= 28615760
