How to convert 513 US customary teaspoons to US gallons?
We know (by definition) that:
We can set up a proportion to solve for the number of US gallons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 US gallon is equal to 1.49707602339181 times 513 US customary teaspoons.
It can also be expressed as: 513 US customary teaspoons is equal to US gallons.
An approximate numerical result would be: five hundred and thirteen US customary teaspoons is about zero point six seven US gallons, or alternatively, a US gallon is about one point five zero times five hundred and thirteen US customary teaspoons.
 The precision is 15 significant digits (fourteen digits to the right of the decimal point).Results may contain small errors due to the use of floating point arithmetic.