Correct option is B
Given equation
1/3.718 = 0.2689
Multiply both sides with number 10,000, we get,
1/3.718×10000 = 0.2689 × 10000
Since the value 3.718 of left-hand side is divided by 10000, so its each digit will be moved 4 place right. Also, right-hand side each digit move 4 digit left as it is multiplied by 10000.
So, the above equation become = 1/0.0003718 = 2689