and B work together to complete a task. If A and B work together for 3 days, B will do the rest alone, and it will be completed within the specified time; if A alone does it, it will take 36 days; if B does it alone, it will take 4 days to complete it beyond the specified time. Find the number of days required to complete the job.
甲、乙两人共同完成一件工作．如果甲、乙两人合做3天后，剩下的由乙单独做，刚好在规定时间完成；如果甲单独做需要36天完成；如果乙单独做，则要超过规定时间4天才能完成．求完成这件工作规定的天数．
<gadget id="calculator">1 / 36</gadget>
<output>1/36 = around 0.027778</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/36) * (3/4)</gadget>
<output>1/48 = around 0.020833</output>

<gadget id="calculator">(1/36) + (1/48)</gadget>
<output>7/144 = around 0.048611</output>

<gadget id="calculator">(7/144) * 3</gadget>
<output>7/48 = around 0.145833</output>

<gadget id="calculator">1 - (7/48)</gadget>
<output>41/48 = around 0.854167</output>

<gadget id="calculator">(41/48) / (1/48)</gadget>
<output>41</output>

<gadget id="calculator">41 + 3</gadget>
<output>44</output>

<result>44</result>