{echo 42}
42
{echo -7 + 2}
-5
{echo 1.25 * 4}
5
{echo .5 + .25}
0.75
{echo 1e3 + 1}
1001
{echo 2.5E-1 * 4}
1
{echo 0x41}
A
{echo 0x504144}
PAD