There is a 180 cm long rope. From one end, mark every 3 cm and every 4 cm, and then cut the marked place. How many pieces of the rope have been cut?
有一根180厘米长的绳子，从一端开始每3厘米作一记号，每4厘米作一记号，然后将标有记号的地方剪断，绳子共被剪成了多少段？
<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 - 1</gadget>
<output>59</output>

<gadget id="calculator">180 / 4</gadget>
<output>45</output>

<gadget id="calculator">45 - 1</gadget>
<output>44</output>

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

<gadget id="calculator">15 - 1</gadget>
<output>14</output>

<gadget id="calculator">44 - 14</gadget>
<output>30</output>

<gadget id="calculator">59 + 30</gadget>
<output>89</output>

<gadget id="calculator">89 + 1</gadget>
<output>90</output>

<result>90</result>