Alright, let's work through 71547579 times 52406609 step by step
71547579 × 52406609 = 52406609 × (71547579)
+ 52406609 × 9 that results in 471659481
+ 52406609 × 70 what gives us 3668462630
+ 52406609 × 500 that results in 26203304500
+ 52406609 × 7000 that is equal 366846263000
+ 52406609 × 40000 producing 2096264360000
+ 52406609 × 500000 that results in 26203304500000
+ 52406609 × 1000000 which equals 52406609000000
+ 52406609 × 70000000 resulting in 3668462630000000

= 3749565997549611
