Alright, let's work through 3872572 times 25406137 step by step
3872572 × 25406137 = 25406137 × (3872572)
+ 25406137 × 2 that results in 50812274
+ 25406137 × 70 that is equal 1778429590
+ 25406137 × 500 that is equal 12703068500
+ 25406137 × 2000 giving us 50812274000
+ 25406137 × 70000 what gives us 1778429590000
+ 25406137 × 800000 what gives us 20324909600000
+ 25406137 × 3000000 producing 76218411000000

= 98387094774364
