public static Number div(final Number a, final Number b) {
        return mathOperationWithPromote(numberHelper -> numberHelper.div, false, a, b);
    }
Divides two numbers returning the highest common number class between them calling
{@link #div(Number, Number, boolean)} with a {@code false}.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/util/NumberHelper.java