The students in the science and technology group made small technological products. The ratio of the number of pieces A, B, and C was 5:4:6. It is known that group C made 72 pieces. How many pieces did the three groups make in total?
科技小组的同学制作科技小成品，甲、乙、丙三个组成品件数比是5：4：6，已知丙组做了72件，三个组共做了多少件？
<gadget id="calculator">72 / 6</gadget>
<output>12</output>

<gadget id="calculator">5 + 4 + 6</gadget>
<output>15</output>

<gadget id="calculator">12 * 15</gadget>
<output>180</output>

<result>180</result>