Alright, let's work through 1229 times 415 step by step
1229 × 415 = 415 × (1229)
+ 415 × 9 what gives us 3735
+ 415 × 20 giving us 8300
+ 415 × 200 what gives us 83000
+ 415 × 1000 producing 415000

= 510035
