I have a product used to sell for 118 which includes value of the product is 100 + 9% of CGST tax + 9% of SGST tax which equals 100+9+9=118.
Now I want to calculate the tax from the total cost. for example, total cost is 118, i need a help for the formula to work back 100+9+9=118.
I have tried, but i am getting wrong answer.
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