Alright, let's work through 5320187 times 97391927 step by step
5320187 × 97391927 = 97391927 × (5320187)
+ 97391927 × 7 resulting in 681743489
+ 97391927 × 80 resulting in 7791354160
+ 97391927 × 100 producing 9739192700
+ 97391927 × 0000 resulting in 0
+ 97391927 × 20000 giving us 1947838540000
+ 97391927 × 300000 giving us 29217578100000
+ 97391927 × 5000000 that equals 486959635000000

= 518143263930349
