He looked down at his terminal to make calculations, then looked back up.

He stared at Norma's calculations, working them repeatedly in his mind, watchful for errors while trying to understand.

He was looking down at his scribbled calculations when he heard the laboratory door open.

After the fifth or sixth time I'd checked the figures, I stared at my calculations.

Daniel looked at his calculations.

Even the sta, now, ceased at his calculations to gaze in astonishment at Heredes.

Ramagelooked at his brief calculations again and then screwed them up.

He smiled at his calculations.

'Thousand copies,' he mumbled abstractedly, working away at his calculations on the back of the handbill.