This example illustrates basic Expression Language arithmetic. Addition (+), subtraction (-), multiplication (*), division (/ or div), and modulus (% or mod) are all supported. Error conditions, like division by zero, are handled gracefully.

```
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```
**EL Expression**
**Result**
${1}
1
${1 + 2}
3
${1.2 + 2.3}
3.5
${1.2E4 + 1.4}
12001.4
${-4 - 2}
-6
${21 * 2}
42
${3/4}
0.75
${3 div 4}
0.75
${3/0}
Infinity
${10%4}
2
${10 mod 4}
2
${(1==2) ? 3 : 4}
4