No problem, we've got 2403 and 7802 to multiply
2403 × 7802 = 7802 × (2403)
+ 7802 × 3 what gives us 23406
+ 7802 × 00 giving us 0
+ 7802 × 400 producing 3120800
+ 7802 × 2000 which equals 15604000

= 18748206
