Alright, let's work through 42382148 times 51706142 step by step
42382148 × 51706142 = 51706142 × (42382148)
+ 51706142 × 8 that equals 413649136
+ 51706142 × 40 which equals 2068245680
+ 51706142 × 100 resulting in 5170614200
+ 51706142 × 2000 giving us 103412284000
+ 51706142 × 80000 that results in 4136491360000
+ 51706142 × 300000 yielding 15511842600000
+ 51706142 × 2000000 that is equal 103412284000000
+ 51706142 × 40000000 what gives us 2068245680000000

= 2191417362753016
