But there also was a startling omission: The calculator’s “C” button—the one that clears input—was gone. The “C” itself had been cleared. Until today, ...

Now, instead of simply coming up with the answer, Google presents you with a full, 34-button scientific calculator. Sine, cosines, tangents; all of that good stuff is in there.

Then click the “Calculate” button. Presto! The calculator shows that your balance after 10 years would have been $8,954.24 if you had not withdrawn $2,000.

In iPadOS 18, there’s a new Calculator app but also a new way to do math in Notes — called Math Notes — and around the operating system. We put it to the test.