How do I make something, spawned at the cursor, on a grid?

So, I'm making a sandbox game. I want the player to be able to place objects where their cursor is, but i still want it on the 128x128 grid. I can't find a way to do this, I don't see a way to make something spawn on the cursor, but on an offset. Any suggestions?

https://drive.google.com/file/d/1gHKlcbATTdlT6jD0zTTJOotZEYKwgqrj/view?usp=sharing

On clicked, store Mouse.X and Mouse.Y

Use math to split the position with grid size so you will be able to know the grid position to place the object.

Example: Mouse.X=1222 and Mouse.Y=342

The grid size is 128x128 so

1222/128 = 9.54

342/128 = 2.67

So you need to create the object on grid 9x2..

Converting into pixels.. 1152x256

I am very late, but I tried this from what I could understand. I got this. imgur.com/7gmtUit. But, it doesn't work, and just places it far away from the mouse (on no grid).

> On clicked, store Mouse.X and Mouse.Y

> Use math to split the position with grid size so you will be able to know the grid position to place the object.

>

> Example: Mouse.X=1222 and Mouse.Y=342

> The grid size is 128x128 so

> 1222/128 = 9.54

> 342/128 = 2.67

>

> So you need to create the object on grid 9x2..

> Converting into pixels.. 1152x256

I am very late, but I tried this from what I could understand. I got this. imgur.com/7gmtUit. But, it doesn't work, and just places it far away from the mouse (on no grid).

On clicked -> Create Object At

X: (floor(Mouse.X/16))*16

Y: (floor(Mouse.Y/16))*16

Dont forget to set the sprite origin image point at Top Left