It represents tables of 3 and 7.
For 3's table rotate clockwise and keep moving ahead. For every one circle completed add 1 to ten's place. Copy the digit at the end of arrow at one's place.
For 7's table rotate anti-clockwise (start from '7') and keep moving ahead in the arrow's direction. Increment ten's place by 1 for '4', '1', '5', '2', '6', '3', '0'. ( Or don't increment ten's place for '7', '8', '9') Copy the digit at the end of arrow at one's place.