This year's Arbor Day, the school planted 160 pine trees, and 12 did not survive. What is the survival rate of this year's tree planting?
今年植树节，学校种植了160棵松树，12棵没有成活，今年植树的成活率是多少．
<gadget id="calculator">160 - 12</gadget>
<output>148</output>

<gadget id="calculator">148 / 160</gadget>
<output>37/40 = around 0.925</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(37/40) * 1</gadget>
<output>37/40 = around 0.925</output>

<result>37/40 = around 0.925</result>