Sherlock said to me to stay with him till he thinks it's safe for me to leave but he did say it could be days, weeks or even months till I can get back home.

" Are you a/n you haven't moved from that area since you got up this morning"

" Yay sorry just bored nothing to do"

" Oh well maybe you help me something"

" Ok sure"

You and John walk to this room with a board of maths on it. It had a question of 30x600+45-290+8x400=??

" Are you good at maths?"

" I'm ok if you want I can try?"

" Go ahead"

I went to the board at I got somehow I got it and I wrote it out.

"30x600+(45−290)+8x400 then you can simplify it to be 30x600−245+8x400"

" How did you do that?"

I turn around to see Sherlock standing there in the doorway.

"What do you mean"

" You got that faster than anyone we know so...how did....you do...it?"

" I really don't know it just came into my head and that is it"

" John I need to take to you"

" Ok"