Alright, let's work through 81206652 times 82478405 step by step
81206652 × 82478405 = 82478405 × (81206652)
+ 82478405 × 2 that is equal 164956810
+ 82478405 × 50 what gives us 4123920250
+ 82478405 × 600 what gives us 49487043000
+ 82478405 × 6000 that results in 494870430000
+ 82478405 × 00000 resulting in 0
+ 82478405 × 200000 yielding 16495681000000
+ 82478405 × 1000000 what gives us 82478405000000
+ 82478405 × 80000000 what gives us 6598272400000000

= 6697795132350060
