400 or 600 watts water pump 7a, refrigerator 57

Without knowing the voltage  current alone is meaningless, 7A at 12V is 84W,  at 24V is 168W, at 48V is 336W
That aside 400W worth of PV is unlikely enough to support the refrigerator alone.

Making claims based on panel wattage alone is far too simplistic, there are too many variables, such as days of cloud cover, seasonal changes in available solar isolation and geographic location that need to be considered. For this reason it's important to account for these variations in the design phase which invariably results in a system seemingly larger than initially perceived.

Many people fall into the trap of underestimating their loads and overestimating the solar potential. This is by far the most common beginners mistake, usually rearing it's head a month or two later when the battery has failed, often at the onset of winter.
Most who offer advice here have experienced this in one form or the other and are willing to assist others from making the same mistakes they made.

Perhaps at the equator in a desert location with horizontal panels it would easier to predict, outside such ideal conditions things become somewhat more complicated. Don't fall into the trap.