Alright, let's work through 13325620 times 42130823 step by step
13325620 × 42130823 = 42130823 × (13325620)
+ 42130823 × 0 producing 0
+ 42130823 × 20 that is equal 842616460
+ 42130823 × 600 that equals 25278493800
+ 42130823 × 5000 yielding 210654115000
+ 42130823 × 20000 which equals 842616460000
+ 42130823 × 300000 that equals 12639246900000
+ 42130823 × 3000000 that equals 126392469000000
+ 42130823 × 10000000 that results in 421308230000000

= 561419337585260
