10 students stand in a column and arrange them in order of height from low to high and from front to back. Among them, there are only 5 students with the same height of 155 cm. How many ways are there in total?
10个学生站一列纵队，按照身高由低到高从前到后排列，其中有且只有5个学生身高相同都是155厘米，则共有多少种排法．
<gadget id="calculator">5 * 4 * 3 * 2 * 1 * 1</gadget>
<output>120</output>

<result>120</result>