An iron wire, 1/3 of it is used up and 1m is left, and there is 27m left. What is the total length of this iron wire in meters? (solution with equation)
一根铁丝，用去它的(1/3)多1m，还剩27m，这根铁丝全长多少米？(用方程解答)
<gadget id="calculator">1 + 27</gadget>
<output>28</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">28 / (2/3)</gadget>
<output>42</output>

<result>42</result>