How to convert 680 metric 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 1.11335640705882 times 680 metric teaspoons.
It can also be expressed as: 680 metric teaspoons is equal to US gallons.
An approximate numerical result would be: six hundred and eighty metric teaspoons is about zero point nine zero US gallons, or alternatively, a US gallon is about one point one one times six hundred and eighty metric 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.