Hexi Village carried out afforestation activities last year, and 4,000 saplings planted survived, and 1,000 did not survive. Seek the survival rate.
河西村去年开展植树造林活动，所植树苗成活的有4000棵，未成活的有1000棵，求成活率．
<gadget id="calculator">4_000 + 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">4_000 / 5_000</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>