A number (4/15) minus 19 is equal to its (1/9) plus 9. What is this number?
一个数的(4/15)减去19，和它的(1/9)加上9相等，这个数是多少？
<gadget id="calculator">19 + 9</gadget>
<output>28</output>

<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(4/15) - (1/9)</gadget>
<output>7/45 = around 0.155556</output>

<gadget id="calculator">28 / (7/45)</gadget>
<output>180</output>

<result>180</result>