Please answer all questions and show FULL working

Samples（1）

Samples（2）

If 26×543=14118,

the calculate 2.6×0.0543=

Samples（3）

Express 6 mm as a percentage of 8 cm.

Samples（4）

In a sale, a shirt is reduced by 12%. If it originally cost $70, what is the new (sale) price?

Samples（5）

Find the missing angles: