Xiaoliang started to write numbers continuously from 1: 1, 2, 3, 4, 5, ..., he wrote a total of 726 numbers, how many numbers did he write.
小亮从1开始连续写数：1，2，3，4，5，…，他一共写了726个数字，他写了多少个数．
<gadget id="calculator">99 - 10</gadget>
<output>89</output>

<gadget id="calculator">89 + 1</gadget>
<output>90</output>

<gadget id="calculator">2 * 90</gadget>
<output>180</output>

<gadget id="calculator">726 - 100</gadget>
<output>626</output>

<gadget id="calculator">626 + 1</gadget>
<output>627</output>

<gadget id="calculator">3 * 627</gadget>
<output>1_881</output>

<gadget id="calculator">9 + 180 + 1_881</gadget>
<output>2_070</output>

<result>2_070</result>