Alright, let's work through 87212155 times 65796208 step by step
87212155 × 65796208 = 65796208 × (87212155)
+ 65796208 × 5 producing 328981040
+ 65796208 × 50 producing 3289810400
+ 65796208 × 100 producing 6579620800
+ 65796208 × 2000 that is equal 131592416000
+ 65796208 × 10000 yielding 657962080000
+ 65796208 × 200000 resulting in 13159241600000
+ 65796208 × 7000000 that results in 460573456000000
+ 65796208 × 80000000 yielding 5263696640000000

= 5738229090508240
