Alright, let's work through 87259020 times 50753408 step by step
87259020 × 50753408 = 50753408 × (87259020)
+ 50753408 × 0 that equals 0
+ 50753408 × 20 that results in 1015068160
+ 50753408 × 000 producing 0
+ 50753408 × 9000 yielding 456780672000
+ 50753408 × 50000 resulting in 2537670400000
+ 50753408 × 200000 which equals 10150681600000
+ 50753408 × 7000000 yielding 355273856000000
+ 50753408 × 80000000 that results in 4060272640000000

= 4428692643740160
