Alright, let's work through 87246894 times 77179547 step by step
87246894 × 77179547 = 77179547 × (87246894)
+ 77179547 × 4 that is equal 308718188
+ 77179547 × 90 that is equal 6946159230
+ 77179547 × 800 giving us 61743637600
+ 77179547 × 6000 what gives us 463077282000
+ 77179547 × 40000 that results in 3087181880000
+ 77179547 × 200000 giving us 15435909400000
+ 77179547 × 7000000 that equals 540256829000000
+ 77179547 × 80000000 producing 6174363760000000

= 6733675756077018
