if i worked 9 hours and 50 mins ' £7 per hour how much have i earned

$$\left({\mathtt{9}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{50}}}{{\mathtt{60}}}}\right){\mathtt{\,\times\,}}{\mathtt{7}} = {\frac{{\mathtt{413}}}{{\mathtt{6}}}} = {\mathtt{68.833\: \!333\: \!333\: \!333\: \!333\: \!3}}$$

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