A number is divided by 5 minus 200, multiplied by 2, and finally added to 30. The result is 230. What is this number? How many.
一个数除以5减去200再乘以2，最后加上30，结果等于230，这个数是多少？多少．
<gadget id="calculator">230 - 30</gadget>
<output>200</output>

<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<gadget id="calculator">100 + 200</gadget>
<output>300</output>

<gadget id="calculator">300 * 5</gadget>
<output>1_500</output>

<result>1_500</result>