\[\boxed{\mathbf{233.}}\]
\[956 - 600 - 4 = 356 - 4 = 352\]
\[260 + (540 - 40) =\]
\[= 260 + 500 = 760\]
\[617 + 0 - 6 = 617 - 6 = 611\]
\[153 + 6\ :2 = 153 + 3 = 156\]
\[567 - 20\ :4 = 567 - 5 = 562\]
\[18\ :3 + 213 = 6 + 213 = 219\]
\[768 - 54\ :9 = 768 - 6 = 762\]
\[42\ :6 + 132 = 7 + 132 = 139\]
\[32\ :8 + 524 = 4 + 524 = 528\]