"684除以七十二六百八十四除以72"...684除以七十二六百八十四除以72
"684除以7"...684除以7
"624除以七十"...624除以七十
"658除以七十"...658除以七十
"748除以六十"...748除以六十
"684除以76等于几"...684除以76等于几
"7140除以68"...7140除以68
"684除以72"...684除以72
"684除以57"...684除以57
"786除以六十"...786除以六十