Alright, let's work through 7572684 times 21387902 step by step
7572684 × 21387902 = 21387902 × (7572684)
+ 21387902 × 4 what gives us 85551608
+ 21387902 × 80 that equals 1711032160
+ 21387902 × 600 that equals 12832741200
+ 21387902 × 2000 that is equal 42775804000
+ 21387902 × 70000 that results in 1497153140000
+ 21387902 × 500000 that equals 10693951000000
+ 21387902 × 7000000 yielding 149715314000000

= 161963823268968
