Cool number action for UI
<span class="from">30000</span>
<span class="to">70000</span>
Drain.do({ from: '.from', to: '.to', qua: 30000 });
<span class="from">300</span>
Drain.do({ from: '.from', qua: 100 });
<span class="to">500</span>
Drain.do({ to: '.to', qua: 100 });