Alright, let's work through 87672508 times 79425688 step by step
87672508 × 79425688 = 79425688 × (87672508)
+ 79425688 × 8 giving us 635405504
+ 79425688 × 00 giving us 0
+ 79425688 × 500 what gives us 39712844000
+ 79425688 × 2000 which equals 158851376000
+ 79425688 × 70000 yielding 5559798160000
+ 79425688 × 600000 that equals 47655412800000
+ 79425688 × 7000000 resulting in 555979816000000
+ 79425688 × 80000000 producing 6354055040000000

= 6963449266585504
