When talking about quantity or statistics, "in numbers" is a commonly used phrase. However, there are several other synonyms that can be used to convey the same meaning. Among these, we have "quantitatively," "numerically," "arithmetically," "statistically," "by the numbers," and "mathematically." Each of these words can be used to describe the presence or amount of something in a numerical or statistical form. For example, if talking about the increase in sales, one could say "quantitatively, sales have increased by 10% in the last quarter." Ultimately, the choice of synonym depends on the context and the speaker's preference.