firefly-iii/resources/views/reports/partials/operations.twig

<table class="table table-hover">
    <tr>
        <td>{{ 'in'|_ }}</td>
        <td>{{ incomeSum|formatAmount }}</td>
    </tr>
    <tr>
        <td>{{ 'out'|_ }}</td>
        <td>{{ expensesSum|formatAmount }}</td>
    </tr>
    <tr>
        <td>{{ 'difference'|_ }}</td>
        <td>{{ (incomeSum + expensesSum)|formatAmount }}</td>
    </tr>
</table>