A and B together produce a certain number of machine parts in one day. It is known that the parts produced by A are 3 less than (3/4) of the total, and the parts produced by B are 1 more than (1/3) of the total. A produces in one day How many machine parts?
甲、乙两人一天共生产机器零件若干个，已知甲生产的零件比总数的(3/4)少3个，乙生产的零件比总数的(1/3)多1个，甲一天生产机器零件多少个？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

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

<gadget id="calculator">(3/4) + (-2/3)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">2 / (1/12)</gadget>
<output>24</output>

<gadget id="calculator">(3/4) * 24</gadget>
<output>18</output>

<gadget id="calculator">18 - 3</gadget>
<output>15</output>

<result>15</result>