Alright, let's work through 87597322 times 71978136 step by step
87597322 × 71978136 = 71978136 × (87597322)
+ 71978136 × 2 producing 143956272
+ 71978136 × 20 that equals 1439562720
+ 71978136 × 300 producing 21593440800
+ 71978136 × 7000 what gives us 503846952000
+ 71978136 × 90000 which equals 6478032240000
+ 71978136 × 500000 which equals 35989068000000
+ 71978136 × 7000000 that results in 503846952000000
+ 71978136 × 80000000 giving us 5758250880000000

= 6305091956151792
