There are 50 goats and 3 more sheep than 80% of goats. How many sheep are there?
山羊50只，绵羊比山羊的80%多3只，绵羊有多少只？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">50 * (4/5)</gadget>
<output>40</output>

<gadget id="calculator">40 + 3</gadget>
<output>43</output>

<result>43</result>