<span>7,48*10=74,8</span>
<span><span>7,48*100=748</span></span>
<span><span><span>7,48*1000=7480</span></span></span>
<span><span><span><span>0,19*10=1,9</span></span></span></span>
<span><span><span><span><span>0,19*100=19</span></span></span></span></span>
<span><span><span><span><span><span>0,19*1000=190</span></span></span></span></span></span>
<span><span><span><span><span><span><span>4,5*10=45</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>4,5*100=450</span></span></span></span></span></span></span></span>
<span><span><span><span><span>4,5*1000=4500</span></span></span></span></span>