I have come up with a simple solution to show abandon cart people that they have the ability to split payments into 4 equal payments.  Go into edit your abandoncart flow.  Add a text box.  Once you add a text box, click on source and add the following code

</style>
<div style="text-align:center;font-size:17px;">
<p><strong><span style="font-size:17px;line-height:35px;font-lato;font-weight:700;letter-spacing:0.023em;">PAY IN 4 INSTALLMENTS OF</span></strong><br />
${{ event|lookup:'$value'|cut:'$'|divide:4|round_up:2 }}</p>
</div>

If you have any issues please let me know if I can help in anyway