70-6÷8•10÷4

To solve the expression \( 70 - 6 \div 8 \cdot 10 \div 4 \), we follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

1. First, perform the division and multiplication from left to right:

   • \( 6 \div 8 = 0.75 \)
   • Next, multiply \( 0.75 \cdot 10 = 7.5 \)
   • Then, divide \( 7.5 \div 4 = 1.875 \)

2. Now substitute back into the original expression:

   \[ 70 - 1.875 \]

3. Finally, perform the subtraction:

   \[ 70 - 1.875 = 68.125 \]

So, the result of the expression \( 70 - 6 \div 8 \cdot 10 \div 4 \) is \( 68.125 \).