ExpVal example.

The result of the operation : TRUNC(5.7) IS 5
The result of the operation : RANDOM(7) IS 5
The result of the operation : (4+3)*0.06 IS 0.42

With FORMAT property.

The result of the operation : TRUNC(5.7) IS 5.00
The result of the operation : RANDOM(7) IS $1.000
The result of the operation : (4+3)*0.06 IS 42.0 %