Alright, let's work through 7487448 times 71964157 step by step
7487448 × 71964157 = 71964157 × (7487448)
+ 71964157 × 8 that equals 575713256
+ 71964157 × 40 what gives us 2878566280
+ 71964157 × 400 producing 28785662800
+ 71964157 × 7000 yielding 503749099000
+ 71964157 × 80000 which equals 5757132560000
+ 71964157 × 400000 producing 28785662800000
+ 71964157 × 7000000 producing 503749099000000

= 538827883401336
