Mathematic Puzzling

Caedmon

When one equals a, and two equals b,

Its no wonder that c equals three.

And when d equals four,

So on it until z,

This puzzle’s completed in a jiffy.

Take an equation and solve it to end,

Then times by a number of ten to the ten.

But still you’re not done,

Times it once more,

By ten to the twenty,

To see what’s in store.

∫ π(6. 54772110433x )dx