On a wooden stick, there are three kinds of graduation marks. The first type of scale divides the stick into 10 equal parts; the second type of scale marks divides the stick into 12 equal parts; the third type of scale marks divides the stick into 15 equal parts. If the stick is sawn along each scale line, how many pieces will the stick be sawn in total?
在一根木棍上，有三种刻度线．第一种刻度线将木棍分成10等份；第二种刻度线将木棍分成12等份；第三种刻度线将木棍分成15等份．如果沿每条刻度线将木棍锯断，木棍总共被锯成多少段？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">60 / 30</gadget>
<output>2</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">60 / 20</gadget>
<output>3</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">15 - 1 - 1 - 4 - 2</gadget>
<output>7</output>

<gadget id="calculator">9 + 11 + 7 + 1</gadget>
<output>28</output>

<result>28</result>