Exponential from a series

Write a function Exp1(x, ε) that approximates $e^x$ with the Taylor series:

$e^x = 1 + x + \frac{x^2}{2!} + \frac{x^3}{3!} + \ldots + \frac{x^k}{k!} + \ldots$

Add the terms one by one and stop at the first term whose absolute value is less than $\varepsilon$ — that term itself is not added.

A single line with $x$ and $p$: $x$ has one digit after the decimal point ($-10 \le x \le 10$), $p$ is an integer (), .

A single number — the computed sum with exactly 6 digits after the decimal point.

Get each term from the previous one: $\dfrac{x^k}{k!} = \dfrac{x^{k-1}}{(k-1)!} \cdot \dfrac{x}{k}$ — there is no need to compute the factorial and the power separately, they grow huge quickly.