Помогите не понимаю 503

$sqrt{48} / sqrt{3}$ = $sqrt{48/3}$ = $sqrt{16}$ =4
$sqrt{150} / sqrt{6}$ = $sqrt{150/6}$ = $sqrt{25}$ =5
$sqrt{6,3} / sqrt{0,7} = sqrt{6,3/0,7} = sqrt{9}=3$
$sqrt{98}$ / $sqrt{242}$ = $sqrt{98/242}$ = $sqrt{49/121} = 7/11$
$sqrt{6}$ * $sqrt{2}$ / $sqrt{3}$ = $sqrt{6*2/3} = sqrt{4} =2$