No problem, we've got 1039 and 2420 to multiply
1039 × 2420 = 2420 × (1039)
+ 2420 × 9 giving us 21780
+ 2420 × 30 what gives us 72600
+ 2420 × 000 resulting in 0
+ 2420 × 1000 producing 2420000

= 2514380
