1. First of all, in mathematics, disjoint operation is recursive calculation, that is, the operation that completely writes out the calculation process, that is, the calculation that deviates from the vertical.

2. Secondly, so 6+6+6+6 can be understood as the multiplication of 5 6.

3. The final 6+6+6+6+6 disjoint calculation format is 6×5.