In Taishan Chunfa Nursery Base, 78 walnut saplings were sold for 18 yuan each, and 100 chestnut saplings were sold for 15 yuan each. How much less are walnut saplings sold than chestnut saplings?
泰山春发苗圃基地，18元一株的核桃树苗卖了78棵，15元一株的板栗树苗卖了100株．核桃树苗比板栗树苗少卖多少元？
<gadget id="calculator">15 * 100</gadget>
<output>1_500</output>

<gadget id="calculator">18 * 78</gadget>
<output>1_404</output>

<gadget id="calculator">1_500 - 1_404</gadget>
<output>96</output>

<result>96</result>