A formula to lower the overestimate for the precision of an exact quotient, without introduce too expensive operations of division on numerator and denominator. [Here is a proof for the formula.](https://github.com/user-attachments/files/22314648/frazioni_decimali.pdf)
------------- Commit messages: - Add time tests - Added link to proof - Optimize exact division Changes: https://git.openjdk.org/jdk/pull/27271/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27271&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8367603 Stats: 199 lines in 2 files changed: 175 ins; 16 del; 8 mod Patch: https://git.openjdk.org/jdk/pull/27271.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27271/head:pull/27271 PR: https://git.openjdk.org/jdk/pull/27271
