Hello sir your teacher app is very nice and I feel so comfortable to use it and this app is so interesting that I solve all this question in this and I also ask something in this but here is some problem that you have been when you teach this questions and many questions just like this they are lengthy and left my School questions so try to find it in slow process means in slow method ok thank you and I have wish that your app and means your Educational Centre will be increased at any time so please reply me thank you so much sir have a nice day