690 UK tablespoons in US customary cups
Result
The conversion result is: 690 UK tablespoons is equivalent to 43.7468918705094 US customary cups.[1]
Conversion formula
How to convert 690 UK tablespoons to US customary cups?
We know (by definition) that: 1 brtablespoon ≈ 0.0634012925659556 uscup.
We can set up a proportion to solve for the number of US customary cups.
1 brtablespoon / 690 brtablespoon ≈ 0.0634012925659556 uscup / x uscup
Now, we cross multiply to solve for our unknown x:
x uscup ≈ (690 brtablespoon / 1 brtablespoon) * 0.0634012925659556 uscup → x uscup ≈ 43.746891870509366 uscup
Conclusion:
690 brtablespoon ≈ 43.746891870509366 uscup

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary cup is equal to 0.0228587668115942 times 690 UK tablespoons.
It can also be expressed as: 690 UK tablespoons is equal to 1 / 0.0228587668115942 US customary cups.
Approximation
An approximate numerical result would be: six hundred and ninety UK tablespoons is about forty-three point seven five US customary cups, or alternatively, a US customary cup is about zero point zero two times six hundred and ninety UK tablespoons.
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.