Grandma Yang planted 1,000 pine trees, and the survival rate was 97.5%. How many pine trees did not survive?
杨奶奶种了1000棵松树，成活率是97.5%，没有成活的松树有多少棵．
<gadget id="calculator">97.5 / 100</gadget>
<output>0.975</output>

<gadget id="calculator">1_000 * 0.975</gadget>
<output>975</output>

<gadget id="calculator">1_000 - 975</gadget>
<output>25</output>

<result>25</result>