YOU SAID:
The toast has burnt into a blackened coal
INTO JAPANESE
トーストは黒くなった石炭に焼けた
BACK INTO ENGLISH
the toast was burned to blackened coal
INTO JAPANESE
トーストは黒くなった石炭に燃やされた
BACK INTO ENGLISH
the toast was burned by blackened coal
INTO JAPANESE
トーストは、黒くなった石炭によって燃やされた
BACK INTO ENGLISH
The toast was burned by blackened coal
INTO JAPANESE
トーストは黒くなった石炭で燃やされた
BACK INTO ENGLISH
the toast was burned with blackened coal
INTO JAPANESE
トーストは黒くなった石炭で燃やされた
BACK INTO ENGLISH
the toast was burned with blackened coal
You should move to Japan!