б) Выполним действия:
1) $$0,2 \cdot 6,2 = 1,24$$
2) $$1,24 : 0,31 = 4$$
3) $$\frac{5}{6} \cdot 0,3 = \frac{5}{6} \cdot \frac{3}{10} = \frac{1}{2} \cdot \frac{1}{1} = \frac{1}{4} = 0,25$$
4) $$4 - 0,25 = 3,75$$
5) $$1\frac{4}{11} = \frac{1 \cdot 11 + 4}{11} = \frac{15}{11}$$
6) $$2 + \frac{15}{11} = \frac{2 \cdot 11 + 15}{11} = \frac{37}{11}$$
7) $$0,22 : 0,01 = 22$$
8) $$\frac{37}{11} \cdot 22 = 37 \cdot 2 = 74$$
9) $$3,75 : 74 = \frac{375}{100} : 74 = \frac{15}{4} : 74 = \frac{15}{4} \cdot \frac{1}{74} = \frac{15}{296}$$
Ответ: $$\frac{15}{296}$$