483.0613 square metres = ? square feet

1 m = about 3.28 ft

So ...  (1m)(1m) = 1m^2  = (3.28 ft)^2  = about 10.7584 ft^2 

Therefore.....483.0613 x 10.7584 ft^2   will give you your answer

1 foot ≈ 30.5 cm 

1 foot ≈ 0.305 m

1 foot² ≈ (0.305 m)² = 0.093025m² 

We see that this fraction equals 1:

$$\frac{1foot^{2}}{0.093025m^{2}}$$

So simply multiply (*) your square meters with this fraction, to get square feet.

To get from square feet to square meters, multiply by the multiplicative inverse of the (former) fraction, that is:

$$\frac{0.093025m^{2}}{1foot^{2}}$$