Little Grand Masters

These two little grand masters have come a long way

 to achieve this feat.

The  three digits of 15 rows flashing at a speed of of 0.5 seconds with gap of 1 second.
Writing down those numbers with remarkable eye hand coordination.
Working out the numbers through visual technique, and achieving an accuracy of 80% and a speed of 2 minutes per sum.
This test is equivalent to DAN 10