A manuscript can be finished by two typists A and B working together in 24 days. Typist A stopped working for 10 days due to some accident, but actually completed the task in 30 days. How many days does it take typist A to type this manuscript alone?
一份稿件，甲乙两个打字员合打24天可以打完，在工作时甲打字员因有事停工10天，实际30天完成任务，求甲打字员独打这份稿件需要多少天？
<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">30 - 10</gadget>
<output>20</output>

<gadget id="calculator">(1/24) * 20</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / 10</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/24) - (1/60)</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">1 / (1/40)</gadget>
<output>40</output>

<result>40</result>