Add 5 to a number, subtract 7, multiply by 4, divide by 6 to get 18. What is this number?
一个数加上5，减去7，乘以4，除以6得18．这个数是多少？
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">18 * (3/2)</gadget>
<output>27</output>

<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">27 + 2</gadget>
<output>29</output>

<result>29</result>