There is a number that is added to 3, multiplied by 5, and then subtracted from 7. The final result is 38. What is this number?
有一个数加上3，再乘以5，然后减去7，最后的结果等于38，这个数是多少？
<gadget id="calculator">38 + 7</gadget>
<output>45</output>

<gadget id="calculator">45 / 5</gadget>
<output>9</output>

<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<result>6</result>