# Simple equation not working?

So I found this equation $$e^{20}=10^{20*.43429\dots} = 10^{8.6858\dots} = 10^9 * 10*(-.3141\dots)$$ on this webpage and I'm really confused as to why it isn't matching up whenever I try it. The first two expressions are equal to each other but the third one doesn't equal either of them. Every time I calculate $10^9 * 10*(-.3141\dots)$ I get $-3414100000$ which is different from the other two expressions which equal $485165195.41$. I'm wondering if this is a mistake and if anyone can explain why this isn't working for me. Thanks.

On that webpage, the last expression has a typo. Rather than $$10\wedge 9 * 10*(-.3141\dots)$$ it should be $$10\wedge 9 * 10\color{red}{\wedge}(-.3141\dots)$$ This works out because $10^9 * 10^{-.3141}\approx 485176771.21$, which is about what you say the other ones are equal to.
• I'm wondering because $\wedge$ and $\mathrm{^}$ are quite different. – ericw31415 May 23 '18 at 0:30