Ответ:
\(68\,451-25\,508=42\,943\).
\(24\,084-23\,852=232\).
\(56\,431-7\,025=49\,406\).
\(80\,004\,874-60\,340\,285=19\,664\,589\).
\(4\,723\,068-3\,847\,946=875\,122\).
\(2\,000\,000\,000-478\,249\,546=1\,521\,750\,454\).
\(68\,451-25\,508=42\,943\).
\(24\,084-23\,852=232\).
\(56\,431-7\,025=49\,406\).
\(80\,004\,874-60\,340\,285=19\,664\,589\).
\(4\,723\,068-3\,847\,946=875\,122\).
\(2\,000\,000\,000-478\,249\,546=1\,521\,750\,454\).