A's number is 4.3, which is 1.8 less than B's number. What is the sum of A's and B's numbers?
甲数是4.3，比乙数少1.8，甲、乙两数的和是多少．
<gadget id="calculator">4.3 + 1.8 + 4.3</gadget>
<output>10.4</output>

<result>10.4</result>