Uncle received a total of 153.9 yuan for processing parts A and B yesterday. Among them, a total of 79.5 yuan is obtained for processing part A, and 1.2 yuan is obtained for processing one part of type B. How many parts of type B are processed?
叔叔昨天加工甲、乙两种零件共得153.9元．其中加工甲零件共得79.5元，乙种零件每加工一个能得1.2元．乙种零件加工了多少个？
<gadget id="calculator">153.9 - 79.5</gadget>
<output>74.4</output>

<gadget id="calculator">74.4 / 1.2</gadget>
<output>62</output>

<result>62</result>