Or, you could just put it straight into the web2 calc using the "math (input=Result)" tab.
$${\mathtt{6}}{\mathtt{\,\times\,}}{\left({\mathtt{9.36}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{7.65}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{9.1}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}} = {\mathtt{6.200\: \!532}}$$
*Always use order of operations Subtract the numbers in the parenthesis.
6(0.386)^2+3(-1.324)^2+3(0.126)^2 Then square the contents of the parenthesis
6(.149)+3(1.753)+3(.016) Multiply
.894+5.259+0.048 Add
6.201 is your answer
Or, you could just put it straight into the web2 calc using the "math (input=Result)" tab.
$${\mathtt{6}}{\mathtt{\,\times\,}}{\left({\mathtt{9.36}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{7.65}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{\left({\mathtt{9.1}}{\mathtt{\,-\,}}{\mathtt{8.974}}\right)}^{{\mathtt{2}}} = {\mathtt{6.200\: \!532}}$$