Alright, let's work through 13324744 times 64847376 step by step
13324744 × 64847376 = 64847376 × (13324744)
+ 64847376 × 4 yielding 259389504
+ 64847376 × 40 producing 2593895040
+ 64847376 × 700 that equals 45393163200
+ 64847376 × 4000 producing 259389504000
+ 64847376 × 20000 giving us 1296947520000
+ 64847376 × 300000 that equals 19454212800000
+ 64847376 × 3000000 which equals 194542128000000
+ 64847376 × 10000000 what gives us 648473760000000

= 864074684271744
