Learn easily how to calculate by visualizing each step of the calculation.
Educative support for parents, pupils, and teachers
Interactive calculator.
For children's and adults' learning based on the method taught at school.
Use it at home or at school.
Supports 4 operations (addition,substraction,multiplication,division)
bugs fix
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://sg-res.9appsdownloading.com/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
