Is it possible to read a cell from a generator without becoming "reactive" to that cell?

Thanks for the reply! I read the notebook you linked. Using viewof x.value looks promising, but I just realized I omitted part of the problem. My notebook actually looks more like this:

speedInMilesPerHour = viewof html`<input min="0" max="10">`
speedInMetersPerSecond = speedInMilesPerHour * 0.44704
position = {
  let position = 0;
  let lastUpdated = performance.now();
  while (true) {
    const currentTime = performance.now();
    position += speedInMetersPerSecond * (currentTime - lastUpdated) / 1000;
    lastUpdated = currentTime;
    yield position;
  }
}

Is there any way to get the value of speedInMetersPerSecond non-reactively?