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@@ -1,5 +1,5 @@
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<!DOCTYPE html>
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<!DOCTYPE html>
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-<html lang="en">
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+<html lang="zh-CN">
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<head>
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<head>
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<meta charset="utf-8">
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<meta charset="utf-8">
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@@ -1393,6 +1393,7 @@
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<button class="btn btn-secondary btn-sm" id="subOpr">-</button>
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<button class="btn btn-secondary btn-sm" id="subOpr">-</button>
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<button class="btn btn-secondary btn-sm" id="mulOpr">*</button>
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<button class="btn btn-secondary btn-sm" id="mulOpr">*</button>
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<button class="btn btn-secondary btn-sm" id="divOpr">/</button>
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<button class="btn btn-secondary btn-sm" id="divOpr">/</button>
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+ <button class="btn btn-secondary btn-sm" id="percentOpr">%</button>
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<button class="btn btn-secondary btn-sm" id="leftOpr">(</button>
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<button class="btn btn-secondary btn-sm" id="leftOpr">(</button>
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<button class="btn btn-secondary btn-sm" id="rightOpr">)</button>
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<button class="btn btn-secondary btn-sm" id="rightOpr">)</button>
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<span id="errorInfo" style="margin-left:15px;"></span>
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<span id="errorInfo" style="margin-left:15px;"></span>
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