Alright, let's work through 8402 times 7844 step by step
8402 × 7844 = 7844 × (8402)
+ 7844 × 2 giving us 15688
+ 7844 × 00 giving us 0
+ 7844 × 400 resulting in 3137600
+ 7844 × 8000 yielding 62752000

= 65905288
