Xiao Dingding gave the thousand paper cranes he made to 7 children, and each child got 5. Xiao Dingding kept 27 for himself. How many thousand paper cranes did Xiao Ding originally have?
小丁丁将自己做的千纸鹤送给7个小朋友，每个小朋友分到5只，小丁丁自己留了27只，小丁丁原来有千纸鹤多少只？
<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<gadget id="calculator">35 + 20</gadget>
<output>55</output>

<result>55</result>