The ratio of the number of mobile phones of a certain type in warehouses A and B is 9:5, and the number of mobile phones of this type in warehouse A is 540. How many mobile phones of this type are there in warehouses A and B?
甲、乙两仓库存有某种型号手机的数量之比为9：5，其中甲仓库有此种型号手机的数量为540部，那么甲、乙两康库共有此种型号手机多少部？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">540 * (5/9)</gadget>
<output>300</output>

<gadget id="calculator">300 + 540</gadget>
<output>840</output>

<result>840</result>