To be honest, maths is my greatest strength and all my family members know how much I love maths. So this is my strategy of solving this complicated problem.
First work out what the topic sentence is, (e.g 4x3) which is 365 x 3 = X
Then work it out!
300 x 3 = 900
60 x 3 =180
5 x 3 = 15
900
+180
15
1095
Then write the word statement at the end!
In one year, you will need to give to a cactus 1095 ml of water.
There you go! If your friend has a cactus at home tell your friend, that is how much water you give to that specific plant.