What is the result of subtracting the product of 3.2 and 1.5 from 48 and adding 6.9?
48减去3.2与1.5的积，再加上6.9，得多少？
<gadget id="calculator">3.2 * 1.5</gadget>
<output>4.8</output>

<gadget id="calculator">48 - 4.8</gadget>
<output>43.2</output>

<gadget id="calculator">43.2 + 6.9</gadget>
<output>50.1</output>

<result>50.1</result>