Number Operations Using Given Values (Without a Calculator)

Solve the following questions without using a calculator.

1. Given that \(37\times 68=2516\), write down the value of
   1. \(0.037\times 6.8\),
   2. \(251.6\div 680\).
2. Given that \(\sqrt{{{19}^{2}}}\times \frac{17}{100}=3.23\), write down the value of
   1. \(32.3\div 19\),
   2. \(0.38\times 17\).