There are three workshops in a factory donating donations, workshop A’s donation is the other two workshops’ donations (2/3), workshop B’s donation is the other two workshops’ donations (3/5), and workshop C’s donation is 720 yuan less than workshop B’s. How much is the total donation of the three workshops?
某工厂三个车间捐款，甲车间捐款是另外两个车间捐款的(2/3)，乙车间捐款是另外两个车间捐款的(3/5)，丙车间捐款比乙车间少720元．三个车间共有捐款多少元．
<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">720 / (3/20)</gadget>
<output>4_800</output>

<result>4_800</result>