Alright, let's work through 87306450 times 66631888 step by step
87306450 × 66631888 = 66631888 × (87306450)
+ 66631888 × 0 which equals 0
+ 66631888 × 50 resulting in 3331594400
+ 66631888 × 400 that is equal 26652755200
+ 66631888 × 6000 that is equal 399791328000
+ 66631888 × 00000 that equals 0
+ 66631888 × 300000 that equals 19989566400000
+ 66631888 × 7000000 that is equal 466423216000000
+ 66631888 × 80000000 that equals 5330551040000000

= 5817393598077600
