You should try this way with "float:":
.container {
width: 100%;
clear: both;
}
.title {
float:left ;
display: inline;
}
.number {
float: right;
}
<div >
<div class="container">
<div class="title">title:</div>
<div class="number">number </div>
</div>
<div class="container">
<div class="title">title:</div>
<div class="number">number </div>
</div>
</div>