Alright, let's work through 6576509 times 20716049 step by step
6576509 × 20716049 = 20716049 × (6576509)
+ 20716049 × 9 producing 186444441
+ 20716049 × 00 resulting in 0
+ 20716049 × 500 resulting in 10358024500
+ 20716049 × 6000 what gives us 124296294000
+ 20716049 × 70000 producing 1450123430000
+ 20716049 × 500000 resulting in 10358024500000
+ 20716049 × 6000000 resulting in 124296294000000

= 136239282692941
