+118667 $$\\4.9+15.21/1.9\\
\approx 5+15/2\\
\approx 5+7.5\\
\approx 12.5$$
exact answer
$${\mathtt{4.9}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{15.21}}}{{\mathtt{1.9}}}} = {\frac{{\mathtt{1\,226}}}{{\mathtt{95}}}} = {\mathtt{12.905\: \!263\: \!157\: \!894\: \!736\: \!8}}$$
Well the estimate is fairly close :)
+118667 $$\\4.9+15.21/1.9\\
\approx 5+15/2\\
\approx 5+7.5\\
\approx 12.5$$
exact answer
$${\mathtt{4.9}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{15.21}}}{{\mathtt{1.9}}}} = {\frac{{\mathtt{1\,226}}}{{\mathtt{95}}}} = {\mathtt{12.905\: \!263\: \!157\: \!894\: \!736\: \!8}}$$
Well the estimate is fairly close :)
