A batch of parts is assigned to A and B for processing according to 5:3. It is known that B has 18 fewer parts than A. How many parts are there in this batch?
一批零件按5：3分配甲、乙两人加工，已知乙分到的零件比甲少18个，这批零件一共有多少个？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">9 * 8</gadget>
<output>72</output>

<result>72</result>