Tip: paste this code into an empty cell, and the marimo editor will create cells for you
import marimo
__generated_with = "0.15.5"
app = marimo.App()
@app.cell
def _():
    import marimo as mo
    return (mo,)
@app.cell
def _(mo):
    for i in range(3):
        mo.output.append(mo.md(f"$i = {i}$"))
    mo.output.append(mo.md("Completed iteration."))
    return
if __name__ == "__main__":
    app.run()