If you're looking for a solution similar to what I've provided, give this a try. It should work well for occasional use, but if you find yourself needing to work with math and science notations frequently, it may not be the most practical option.
* {
padding:0;
margin:0;
box-sizing:border-box;
text-align:center;
}
.container {
width:250px;
height:75px;
display:flex;
flex-direction:row;
align-items:center;
}
.left {
display:flex;
flex:1;
height:100%;
align-items:center;
justify-content:center;
}
.top-bottom {
display:flex;
flex:1;
height:100%;
flex-direction:column;
align-items:center;
justify-content:center;
}
.top {
display:flex;
align-items:center;
justify-content:center;
width:100%;
height:50%;
}
.bottom {
display:flex;
align-items:center;
justify-content:center;
width:100%;
height:50%;
border-top:1px solid green;
}
.right {
display:flex;
align-items:center;
justify-content:center;
flex:1;
height:100%;
}
<div class="container">
<div class="left">132 ±
</div>
<div class="top-bottom">
<div class="top">12 × 1.5%
</div>
<div class="bottom">8 × 1.5%
</div>
</div>
<div class="right">/ 13.86kV
</div>
</div>