A batch of parts is allocated to A and B for processing according to the ratio of 5:3. It is known that the parts assigned to B are 18 fewer than 64% of A's. How many parts are there in this batch?
一批零件按5：3分配给甲、乙两人加工，已知乙分到的零件比甲的64%少18个，这批零件共有多少个？
<gadget id="calculator">64 / 100</gadget>
<output>16/25 = around 0.64</output>

<gadget id="calculator">5 * (16/25)</gadget>
<output>16/5 = around 3.2</output>

<gadget id="calculator">(16/5) - 3</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">18 / (1/5)</gadget>
<output>90</output>

<gadget id="calculator">90 * 5</gadget>
<output>450</output>

<gadget id="calculator">90 * 3</gadget>
<output>270</output>

<gadget id="calculator">450 + 270</gadget>
<output>720</output>

<result>720</result>