Alright, let's work through 1220 times 1536 step by step
1220 × 1536 = 1536 × (1220)
+ 1536 × 0 which equals 0
+ 1536 × 20 producing 30720
+ 1536 × 200 what gives us 307200
+ 1536 × 1000 producing 1536000

= 1873920
