360. Way more?

use the formula (n - 2) * 180, where n is the number of sides.

we get, (360 - 2) * 180 = 64440

The angle formula is $180n - 360$ .

We substitute $n = 360$ to the formula, so $180 \times 360 - 360$ .

Since $180 \times 360 - 360$ equals to $18 \times 18 \times 2 \times 10 \times 10 - 360$ , we get $18 \times 10 \times 18 \times 10 \times 2 - 360 = 324 \times 100 \times 2 - 360 = 648 \times 100 - 360 = 64800 - 360 = \boxed { 64440 }$ .

So the answer is $\boxed { 64440 }$ .

$360 \times 358 = \boxed{64440}$