How to calculate secondary unit price

In the Invoice

For Example : PCs and Boxes
10 Pcs = 2 Boxes
1 Pcs = 10 Rs that is default in Tally
1 Box = 50 Rs what formula should i apply in the field to calculate it.

Please help me
to get Formula

 

[Field: Unit Rate ]
Use : Rate Price Field
Set as : #TotalAmount1/#UnitQTY
;Border : Thin Left
Width : 10

but it is not working ?

admins, Moderators and Experts Please help

 

What is yr requirement?

if you want to print Secondary unit of Qty

use : Qty Secondary Field

if you want to calculate Rate Field

use $$AsrateYourformula)

 

i want to calculate secondary unit rate
if pcs rate 2 then box price = ?

 

Need more clarity

[Field : Secqty]
use : Qty Secondary Field
Set as: $BilledQty

Will Print Box Qty

[Field : Rate]
use : Rate Price Field
Set as : $Rate

[Field : Amount]
use : Amount Field
Set as: $SecQty*$Rate

 

sir,

In default Tally

qty rate amount will come

as per my requirement

QTY (Primary unit) Qty (Secondary unit) (Primary) Rate (secondary) Rate Amount
10 Kgs 2 Box 2 ? 20

here : 10 Kgs x 2 = 20
what is 2 box rate ?

 

??? Secondary Rate

 

box rate need to be calculated