A self-employed household buys a batch of toys from the wholesale market at a price of 2.80 yuan each. When selling them, the price is 3 yuan each. When 60 (5/6) of the total number of these toys are sold, the cost will be recovered. , how many toys are there in total?
某个体户用每个2.80元的价格，从批发市场购进一批玩具，售出时，每个价格为3元，当卖出这些玩具总数的(5/6)又60个时，就收回成本，这批玩具共有多少个？
<gadget id="calculator">3 * 60</gadget>
<output>180</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">3 * (5/6)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">2.8 - (5/2)</gadget>
<output>0.3</output>

<gadget id="calculator">180 / 0.3</gadget>
<output>600</output>

<result>600</result>