Numerology calculations and interpretations are not done on cards. Perhaps you were thinking of a different divination system, like tarot?

Numerology calculations are based on a person's name and birth date. The numerology energy represented by a calculation result are interpreted by a numerologist (or by software using interpretations written by a numerologist) generally in relation to why the calculations were done. (The same number result for a name number and a birth date number generally are interpreted differently.)

Numerology can provide a list of dates when marriage is more likely than on other dates. Use the Likely Marriage Dates Calculator for that.

Numerology is very good at predicting likelihoods and tendencies. But not certainties, because people have free will.