\[\boxed{\text{145.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[= 134\ 000 - 1\ 320 = 132\ 680.\]
\[= 7\ 305 + 49\ 800 = 57\ 105.\]
\[= 372\ 200\ :40 = 9\ 305.\]
\[= 70 \cdot 300 = 21\ 000.\ \]