Помогите решить 3/10+1/100+4/1000, 6+9/10+7/1000, 30+2+3/100+1/1000, 5+7/10+9/100,...

Решите задачу:

$\frac{3}{10} + \frac{1}{100} + \frac{4}{1000} = \frac{300}{1000} + \frac{10}{1000} + \frac{4}{1000} = \frac{314}{1000} = 0,314$

$6+ \frac{9}{10} + \frac{7}{1000} =6+ \frac{900}{1000} + \frac{7}{1000} =6+ \frac{907}{1000} =6,907$

$30+2+ \frac{3}{100} + \frac{1}{1000} =32+ \frac{300}{1000} +1 \frac{1}{1000} =32+ \frac{31}{1000} =32,031$

$5+ \frac{7}{10} + \frac{9}{100} =5+ \frac{70}{100} + \frac{9}{100} =5+ \frac{79}{100} =5,79$

$20+8+ \frac{5}{100} + \frac{6}{1000} =28+ \frac{50}{1000} + \frac{6}{1000} =28+ \frac{56}{1000} =28,056$

$90+ \frac{5}{10} + \frac{7}{100} + \frac{3}{1000} =90+ \frac{5000}{1000} + \frac{700}{1000} + \frac{3}{1000} =90+ \frac{5703}{1000}=90,573$