The survival rate of tree planting in Zhang Village this year is 98%, and 5 trees died. How many trees were planted in total?
张村今年植树的成活率是98%，死了5棵，总植树多少棵．
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">1 - (49/50)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">5 / (1/50)</gadget>
<output>250</output>

<result>250</result>