This outputs numbers using mathematical formula involving other form elements. This element can be used for any sort of calculations, like cost, days, significance etc.

IF YOU NEED TO STACK MULTIPLE MATHEMATICAL OUTPUTS, USE

MATH GROUPFROMDESIGN ELEMENTS.

### UNDERSTANDING THE FORMULA

From **INTERFACE** tab, see the **Formula** field. This is where you write down
your math formula. You can refer to other elements by simply recalling them.
Write down `@`

and it will show you a list of elements you can recall in the
formula. If the given element has a **Numeric Value** (can be assessed from the
element's documentation) then that value will be substituted.

Under the hood we use the great expr-eval library. So all functions and expressions are available. The following are some valid formulas.

1(@toggle-elem == 1 ? @elem-one : @elem-two)

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If the value of the `@toggle-elem`

is `1`

(i.e, selected) then use the value of
`@elem-one`

, else use `@elem-two`

.

1abs(@date-elem-1 - @date-elem-2) / (60*60*24)

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The day difference between `@date-elem-1`

and `@date-elem-2`

.

### CHANGING BEHAVIOR

From the same **INTERFACE** page, you can change the following behaviors.

**Type**- How the output UI appears.**Decimal precision**- Precision of decimal points.**Separator**- Decimal and Thousands separators.**Prefix**- HTML to put before the output.**Suffix**- HTML to put after the output.