13.141. An integer was given. It was required to increase it by 200000 and then triple the resulting number. Instead, the digit 2 was appended to the right of the digital representation of the given number, and the correct result was obtained: What number was given?
## Solution.

Let $x$ be the desired number. By appending the digit 2 to this number, we get the number $10 x+2$. According to the condition, $10 x+2=3(x+200000)$, from which $x=85714$.

Answer: 85714.