Evaluate
7\sqrt{7}\approx 18.520259177
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\frac{7\times 7}{\sqrt{7}}
Multiply \sqrt{7} and \sqrt{7} to get 7.
\frac{49}{\sqrt{7}}
Multiply 7 and 7 to get 49.
\frac{49\sqrt{7}}{\left(\sqrt{7}\right)^{2}}
Rationalize the denominator of \frac{49}{\sqrt{7}} by multiplying numerator and denominator by \sqrt{7}.
\frac{49\sqrt{7}}{7}
The square of \sqrt{7} is 7.
7\sqrt{7}
Divide 49\sqrt{7} by 7 to get 7\sqrt{7}.
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