BigNum * x
The * operator creates a new BigNum instance and assigns to it the value
of the BigNum multiplied by x.
Example
result = BigNum.new("9898239498234898") * 3.14159The * operator creates a new BigNum instance and assigns to it the value
of the BigNum multiplied by x.
result = BigNum.new("9898239498234898") * 3.14159