Alright, let's work through 5247 times 2470 step by step
5247 × 2470 = 2470 × (5247)
+ 2470 × 7 what gives us 17290
+ 2470 × 40 that is equal 98800
+ 2470 × 200 that results in 494000
+ 2470 × 5000 resulting in 12350000

= 12960090
