Alright, let's work through 87758371 times 90537956 step by step
87758371 × 90537956 = 90537956 × (87758371)
+ 90537956 × 1 that results in 90537956
+ 90537956 × 70 what gives us 6337656920
+ 90537956 × 300 resulting in 27161386800
+ 90537956 × 8000 which equals 724303648000
+ 90537956 × 50000 what gives us 4526897800000
+ 90537956 × 700000 what gives us 63376569200000
+ 90537956 × 7000000 that equals 633765692000000
+ 90537956 × 80000000 that equals 7243036480000000

= 7945463532229676
