604 US gallons in US customary teaspoons
Result
The conversion result is: 604 US gallons is equivalent to 463872 US customary teaspoons.[1]
Conversion formula
How to convert 604 US gallons to US customary teaspoons?
We know (by definition) that: 1 usgallon ≈ 768 usteaspoon.
We can set up a proportion to solve for the number of US customary teaspoons.
1 usgallon / 604 usgallon ≈ 768 usteaspoon / x usteaspoon
Now, we cross multiply to solve for our unknown x:
x usteaspoon ≈ (604 usgallon / 1 usgallon) * 768 usteaspoon → x usteaspoon ≈ 463872 usteaspoon
Conclusion:
604 usgallon ≈ 463872 usteaspoon

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary teaspoon is equal to 2.15576710816777e-06 times 604 US gallons.
It can also be expressed as: 604 US gallons is equal to 1 / 2.15576710816777e-06 US customary teaspoons.
Approximation
An approximate numerical result would be: six hundred and four US gallons is about four hundred and sixty-three thousand, eight hundred and seventy-two US customary teaspoons, or alternatively, a US customary teaspoon is about zero times six hundred and four US gallons.
Footnotes
[1] 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.