MaxWong

That is a decimal already.

Do you mean fraction? That is 23/99.

Circumference = pi x diameter.

Time machine doesn't exist now.

$\frac{6}{7}-(-\frac{1}{6}-\frac{5}6)\\ = \frac{6}{7}-(-1)\\ =\frac{6}{7}+1\\ = 1\frac{6}{7}$

Table?

$\dfrac{1}{5}\times (1-\dfrac{1}{5}) = \dfrac{4}{25} \text{ of the drink is left.}$

It was soooo messy!! Could anyone please use LaTeX like I did?

sin 78 = 0.9781476

21 + 55 = 76

$3 \times 10^{-10}\\ = 0.0000000003$