Row 1: There are three leaves which equals to 21. So, we get 3 bunch of leaves = 21, if we divide both sides by 3 then we get the result that 1 bunch of leaves is equal to 7. So, we have 7 + 7 + 7 = ...

Now, we will use the value of 1 caterpillar (with 5 nodes and 1 flower) to solve the next rows of problems. Row 2: Now, we have 1 clock (with 6’o clock) + 1 clock (with 6’o clock) + 1 caterpillar = 19 ...