Alright, let's work through 45314591 times 15175148 step by step
45314591 × 15175148 = 15175148 × (45314591)
+ 15175148 × 1 what gives us 15175148
+ 15175148 × 90 that results in 1365763320
+ 15175148 × 500 which equals 7587574000
+ 15175148 × 4000 giving us 60700592000
+ 15175148 × 10000 that equals 151751480000
+ 15175148 × 300000 that results in 4552544400000
+ 15175148 × 5000000 which equals 75875740000000
+ 15175148 × 40000000 which equals 607005920000000

= 687655624984468
