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