        <div class="form-group">
                    <input type="text" name="d_36" class="form-control" placeholder="36"/>
                </div>
              </div>
          </div>
          <div class="col-md-12">
            <h5>Calculus Index</h5>
            <div class="form-inline">
              <div class="form-group">
                  <input type="text" name="c_16" class="form-control" placeholder="16"/>
              </div>
              <div class="form-group">
                  <input type="