Unfortunately, you are using an automatic translator instead of a dictionary. Spoiler alert: There is not a single good automatic translator for Latin.
For this kind of task, you should use a dictionary: take a look at Which online Latin dictionaries should I use and why? for information about which to pick.
"Multaque" is a combination of multa and the enclitic -que.
- Multa is either the feminine singular nominative (or ablative, if multā) or neuter plural nominative/accusative of the adjective multus, -a, -um, which means "much/many." It can also be the noun multa, as pointed out in Joonas's answer.
- -que simply means "and"
Multaque doesn't mean anything in particular outside of its context. It is as meaningful/meaningless as English, "And much." Here is an example of it used in context, along with its translation:
Multaque in ea genera ferarum nasci constat, quae reliquis in locis visa non sint... (Caesar, De Bello Gallico 6.25.5)
And it is well known that many kinds of beasts are born in it [Germany], which have not been seen in other places.