Essential Arithmetic By Transia Corporation-An exclusive guide and exercise E-Book for High School Students(Class 8-12) and University Students struggling in Arithmetic. You can buy this and check it out. You can also try to solve the sums. It has precise and clear explanations on every topic. Essential Arithmetic is a project of Students Society. Transia Corporation is its distributor Cost Price: US $30.99, BDT 3300taka. Price is high because I and Students Society had to use some sources from Queen Mary's Maths Programme. To buy this please message +8801682307054 in the following format: Name: Email Address: Book Name: Essential Arithmetic After messaging, use the same number to pay 3300taka(along with 60 taka withdrawal charge) to +8801715776767. In the reference box, write Essential Arithmetic. Then to fully confirm your order, send the trxx ID via SMS to 01682307054. That's it. You will receive your copy of the ebook within 8 hours after confirming order. After you have confirmed your order and have paid, I or Transia Corporation will send you the full e-book in PDF format via email.