There is a long wooden stick marked with three colors of red, yellow and blue. The stick is divided into 10 equal parts, 12 equal parts and 15 equal parts respectively. If the wooden stick is sawed along these three marks, the wooden stick How many pieces were sawed in total?
有一根长木棍上用红、黄、蓝三种颜色做标记，分别将木棍平均分成10等份，12等份和15等份，如果沿这三种标记把木棍锯断，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>