A and B have the same number of radishes, among which A intends to sell 2 radishes for 1 yuan, and B intends to sell 3 radishes for 1 yuan. Later, A and B sell the radishes at the price of 2 yuan and 5 radishes, and the result is 4 yuan less than the expected income ． How many radishes does A and B have in total?
甲乙有相同数目的萝卜，其中甲打算卖1元2个，乙打算卖1元3个，后来甲乙一起以2元5个的价钱把萝卜卖了出去，结果比预期的收入少了4元钱．甲乙共有萝卜多少个．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 2</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/3) - (2/5) - (2/5)</gadget>
<output>-7/15 = around -0.466667</output>

<gadget id="calculator">(1/2) + (-7/15)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">4 / (1/30)</gadget>
<output>120</output>

<gadget id="calculator">120 * 2</gadget>
<output>240</output>

<result>240</result>