Alright, let's work through 87520207 times 72846475 step by step
87520207 × 72846475 = 72846475 × (87520207)
+ 72846475 × 7 yielding 509925325
+ 72846475 × 00 yielding 0
+ 72846475 × 200 that is equal 14569295000
+ 72846475 × 0000 producing 0
+ 72846475 × 20000 that equals 1456929500000
+ 72846475 × 500000 yielding 36423237500000
+ 72846475 × 7000000 that is equal 509925325000000
+ 72846475 × 80000000 what gives us 5827718000000000

= 6375538571220325
