Alright, let's work through 89541526 times 63930379 step by step
89541526 × 63930379 = 63930379 × (89541526)
+ 63930379 × 6 yielding 383582274
+ 63930379 × 20 what gives us 1278607580
+ 63930379 × 500 what gives us 31965189500
+ 63930379 × 1000 giving us 63930379000
+ 63930379 × 40000 that results in 2557215160000
+ 63930379 × 500000 that equals 31965189500000
+ 63930379 × 9000000 that is equal 575373411000000
+ 63930379 × 80000000 that results in 5114430320000000

= 5724423693418354
