6*7:4

To solve the expression \( 6 \times 7 \div 4 \):

1. Firstly, calculate \( 6 \times 7 = 42 \).
2. Then, divide the result by 4: \( 42 \div 4 = 10.5 \).

So, \( 6 \times 7 \div 4 = 10.5 \).