Yii2,0 export function using kartik

Hi!

Im new in using kartik, can I just check with you whether kartik is able to handle subtotal?

if yes, how should i do it?

i.e.

Item | desc | total


egg | egg | 4.50

egg | egg | 3.00


subtotal|  7.50

meat | meat | 2.50

meat | meat | 1.50


subtotal|  4.00