The actual investment is 420,000 yuan, accounting for (6/7) of the planned investment. How much is the planned investment?
实际投资42万元，占计划投资的(6/7)，计划投资多少万元？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">42 / (6/7)</gadget>
<output>49</output>

<result>49</result>