Alright, let's work through 2647 times 4852 step by step
2647 × 4852 = 4852 × (2647)
+ 4852 × 7 giving us 33964
+ 4852 × 40 resulting in 194080
+ 4852 × 600 that results in 2911200
+ 4852 × 2000 that equals 9704000

= 12843244
