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Because 7 isn't a perfect square, we'll use the next best perfect square that's just less than 7, which is 4.
Because the residual is less than the quotient, a decimal is appended along with two zeros. This is the dividend for the following division.
The divisor is now added to the quotient from the previous step. At the end, a single digit is added, and the result is multiplied by the same single digit so
that the result is less than the dividend for the next division.
The residual is added with two zeroes again in this phase, and the process is repeated until the number of digits required after the decimal point is reached.
Thus, the square root is 2.645751