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Comment by npongratz | Hacker News Reader

Performing the calculation with Soulver did not surprise me (being what I calculated in my head ahead of time):

    2 + 2 × 10% = 2.2

At the risk of admitting my ignorance, yet more interested in learning something new: should this answer (2.2) surprise me?

Wolfram Alpha and iOS also give 2.2

On MacOS the answer is 2.4

In kalk it's 2.002

On Windows it's 0.4 in simple calc, and 2 in programmer calc (and there's no % in engineering calc)

Haha damn, didn't expect that

What about the win32 calculator shipped with w7 and w10 ltsc?

Android gives me 2.2

2.2 via Google[0]

> and there's no % in engineering calc

Use 0.1 instead of 10%, it has the same vibe ;)