Divide a rope into 4 strands and 3 strands respectively. If the length of 3 strands is 30 cm longer than that of 4 strands, what is the length of the strand in meters?
把一条绳子分别等分成4股和3股，如果折成3股比折成4股长30厘米，那么这根绳子的长度是多少米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) - (1/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">30 / (1/12)</gadget>
<output>360</output>

<result>360</result>