echo "<div class='row'>

 <label class='control-label col-xs-12 col-sm-3 col-md-3 col-lg-3' for='calc_b'>".$locale['gallery_0207']."</label>

 <div class='col-xs-12 col-sm-9 col-md-9 col-lg-9'>

 ".form_text('calc_b', '', $calc_b, [

 'required' => TRUE,

 'type' => 'number',

 'error_text' => $locale['error_rate'],

 'width' => '100px',

 'max_length' => 4,

 'number_min' => 1,

 'class' => 'pull-left m-r-10'

 ])."

 ".form_select('calc_c', '', $calc_c, [

 'options' => $calc_opts,

 'placeholder' => $locale['choose'],

 'width' => '180px',

 'inner_width' => '100%',

 'class' => 'pull-left'

 ])."

 </div>

</div>";