It costs 112 yuan to buy a pair of sports shoes. Xiao Ming pays the salesperson one piece of 100 yuan and one piece of 50 yuan. How much should the salesperson give him.
买一双运动鞋要112元，小明付给营业员一张100元和一张50元，营业员应该找给他多少元．
<gadget id="calculator">50 - 112</gadget>
<output>-62</output>

<gadget id="calculator">100 + (-62)</gadget>
<output>38</output>

<result>38</result>