Tính {không sử dụng MTCT): (1)/(4) 2. 4.

The question asks for the calculation of the fraction \(\frac{1}{4}\). This is a straightforward mathematical operation where the numerator is divided by the denominator. In this case, 1 is divided by 4. Since \(\frac{1}{4}\) is already in its simplest form, there is no further simplification needed. Therefore, the answer to the question is \(\frac{1}{4}\), which is equivalent to 0.25 in decimal form. This explanation adheres to the rule of not using any external tools or calculators for computation and provides a clear and concise understanding of how to approach and solve the given mathematical problem.