The money that mother brought to buy 2.5 kg of lychees is still 1.4 yuan short. If she buys 2 kg of lychees and it is 2.1 yuan more, how much money did mother bring in total?
妈妈带的钱买2.5千克荔枝还差1.4元，如果买2千克荔枝还多2.1元，妈妈一共带了多少钱？
<gadget id="calculator">1.4 + 2.1</gadget>
<output>3.5</output>

<gadget id="calculator">2.5 - 2</gadget>
<output>0.5</output>

<gadget id="calculator">3.5 / 0.5</gadget>
<output>7</output>

<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">14 + 2.1</gadget>
<output>16.1</output>

<result>16.1</result>