Alright, let's work through 42721167 times 1310259 step by step
42721167 × 1310259 = 1310259 × (42721167)
+ 1310259 × 7 resulting in 9171813
+ 1310259 × 60 resulting in 78615540
+ 1310259 × 100 that equals 131025900
+ 1310259 × 1000 that is equal 1310259000
+ 1310259 × 20000 that results in 26205180000
+ 1310259 × 700000 what gives us 917181300000
+ 1310259 × 2000000 producing 2620518000000
+ 1310259 × 40000000 that equals 52410360000000

= 55975793552253
