Alright, let's work through 87058675 times 19427663 step by step
87058675 × 19427663 = 19427663 × (87058675)
+ 19427663 × 5 yielding 97138315
+ 19427663 × 70 resulting in 1359936410
+ 19427663 × 600 which equals 11656597800
+ 19427663 × 8000 that results in 155421304000
+ 19427663 × 50000 that results in 971383150000
+ 19427663 × 000000 giving us 0
+ 19427663 × 7000000 which equals 135993641000000
+ 19427663 × 80000000 that results in 1554213040000000

= 1691346599126525
