There is a 180 cm long rope. Start from one end and make a mark every 4 cm, then make a mark every 3 cm, and then cut along the marked place. How many pieces of the rope have been cut in total?
有一根180厘米长的绳子，先从一端开始每隔4厘米做一个记号，再每隔3厘米做一个记号，然后沿着有记号的地方剪开，问绳子一共被剪成了多少段？
<gadget id="calculator">180 / 4</gadget>
<output>45</output>

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

<gadget id="calculator">180 / 3</gadget>
<output>60</output>

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

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

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

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

<gadget id="calculator">59 - 14</gadget>
<output>45</output>

<gadget id="calculator">44 + 45</gadget>
<output>89</output>

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

<result>90</result>