Alright, let's work through 87975292 times 85012171 step by step
87975292 × 85012171 = 85012171 × (87975292)
+ 85012171 × 2 that equals 170024342
+ 85012171 × 90 producing 7651095390
+ 85012171 × 200 that equals 17002434200
+ 85012171 × 5000 producing 425060855000
+ 85012171 × 70000 that is equal 5950851970000
+ 85012171 × 900000 that results in 76510953900000
+ 85012171 × 7000000 that equals 595085197000000
+ 85012171 × 80000000 giving us 6800973680000000

= 7478970567278932
