Alright, let's work through 42318797 times 42525013 step by step
42318797 × 42525013 = 42525013 × (42318797)
+ 42525013 × 7 what gives us 297675091
+ 42525013 × 90 giving us 3827251170
+ 42525013 × 700 that is equal 29767509100
+ 42525013 × 8000 producing 340200104000
+ 42525013 × 10000 yielding 425250130000
+ 42525013 × 300000 resulting in 12757503900000
+ 42525013 × 2000000 yielding 85050026000000
+ 42525013 × 40000000 that equals 1701000520000000

= 1799607392569361
