\[\boxed{\mathbf{157.}}\]
\[184 - 4 = 180\]
\[184 - 80 = 104\]
\[184 - 84 = 100\]
\[184 - 100 = 84\]
\[429 - 9 = 420\]
\[429 - 29 = 400\]
\[429 - 20 = 409\]
\[429 - 400 = 29\]
\[735 - 700 = 35\]
\[735 - 35 = 700\]
\[735 - 30 = 705\]
\[735 - 5 = 730\]
\[912 - 12 = 900\]
\[912 - 10 = 902\]
\[912 - 2 = 910\]
\[912 - 900 = 12\]