Alright, let's work through 1305 times 4210 step by step
1305 × 4210 = 4210 × (1305)
+ 4210 × 5 that equals 21050
+ 4210 × 00 yielding 0
+ 4210 × 300 resulting in 1263000
+ 4210 × 1000 what gives us 4210000

= 5494050
