Add parentheses to change the operation order of 371-29+4/2 to "addition→subtraction→division". What is the formula?
添加括号把371-29+4/2的运算顺序改变为"加→减→除"，则算式为多少．
<gadget id="calculator">29 + 4</gadget>
<output>33</output>

<gadget id="calculator">371 - 33</gadget>
<output>338</output>

<gadget id="calculator">338 / 2</gadget>
<output>169</output>

<result>169</result>