factory produces a machine tool, and the number of defective products is (1/9) the number of genuine products. Later, after re-examination, it was found that one of the genuine machine tools was unqualified. At this time, the number of defective products was (3/22) the number of genuine products. How many machine tools are there in this batch?
某厂生产一种机床，次品台数是正品台数的(1/9)．后来经过复查，发现正品机床中又有一台不合格，这时，次品台数是正品台数的(3/22)，这批机床一共有多少台？
<gadget id="calculator">22 + 3</gadget>
<output>25</output>

<gadget id="calculator">3 / 25</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/25) - (1/10)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 / (1/50)</gadget>
<output>50</output>

<result>50</result>