\[\boxed{\mathbf{229.}}\]
\[234 + 500 = 734\]
\[234 + 50 = 284\]
\[234 + 5 = 239\]
\[200 + 167 = 367\]
\[20 + 167 = 187\]
\[2 + 167 = 169\]
\[645 - 300 = 345\]
\[645 - 30 = 615\]
\[645 - 3 = 642\]
\[758 - 50 = 708\]
\[758 - 5 = 753\]
\[758 - 500 = 258\]