There are three workshops in a certain factory donating for disaster relief, the donation of workshop A is (2/3) the donation of the other two workshops, the donation of workshop B is the donation of the other two workshops (3/5), the donation of workshop C is more than the donation of workshop B 12 yuan less, how much is the total donation of the three workshops?
某工厂三个车间救灾捐款，甲车间捐款数是另外两个车间捐款的(2/3)，乙车间捐款数是另外两个车间捐款的(3/5)，丙车间捐款数比乙车间捐款少12元，三个车间共捐款多少元？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (3/8)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">(3/8) - (9/40)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">12 / (3/20)</gadget>
<output>80</output>

<result>80</result>